diff --git a/README.md b/README.md
index 6c8da4f..3cc26e5 100644
--- a/README.md
+++ b/README.md
@@ -9,11 +9,19 @@ I built this project on macOS. The instructions should be pretty easy to follow
 The build pipeline has dependencies on [node.js](http://nodejs.org) and [SDCC](http://sdcc.sourceforge.net). You'll need to install them.
 
 ### Dependencies
-`cd` into `ihx2gb/` and run `npm install`.
-
 `cd` into `img2gb/` and run `npm install`.
 
 `cd` into `stringc/` and run `npm install`.
 
 ### Building the Game
 `cd` into `game/` and run `make` or `make debug`.
+
+### Building the Game and Dependencies
+Just run `make`, `make debug` or `make run` in the root folder.
+
+### Building with an SDCC Snapshot
+*This is for versions of SDCC that aren't installed*
+```
+SDCC_HOME=/path/to/sdcc/share/sdcc/
+make SDCCBIN=${SDCC_HOME}../../bin/
+```
\ No newline at end of file
diff --git a/game/makefile b/game/makefile
index fe32ea9..50a3f9d 100644
--- a/game/makefile
+++ b/game/makefile
@@ -1,8 +1,15 @@
-CC = sdcc
-ASMC = sdasgb
+SDCCBIN = 
+CC = $(SDCCBIN)sdcc
+AS = $(SDCCBIN)sdasgb
+MKROM = $(SDCCBIN)makebin
+# https://github.com/LIJI32/SameBoy or any other emulator
+EMU = sameboy
+# https://github.com/bbbbbr/romusage
+ROMUSE = romusage
+NODE = node
 CFLAGS = -c -mgbz80
-ASMFLAGS = -plosgffjw
-LINKFLAGS = -mgbz80 --no-std-crt0 --data-loc 0xc0a0
+ASFLAGS = -plosgffjw
+LDFLAGS = -mgbz80 --no-std-crt0 --data-loc 0xc0a0
 
 GFXS = $(notdir $(shell find data/gfx -name '*.png'))
 GFXSRC = $(patsubst %.png,data_gfx_%.c,$(GFXS))
@@ -13,44 +20,60 @@ OBJS = $(SRCS:.c=.o)
 SRCFILES = $(patsubst %.c,src/%.c,$(SRCS))
 OBJFILES = $(patsubst %.s,obj/%.rel,$(ASMS)) $(patsubst %.c,obj/%.rel,$(SRCS))
 
-build: obj/dependencies bin/BubbleFactory.gb
+ROM = BubbleFactory
 
-debug: CFLAGS += -DDEBUG
+.PHONY: build debug run clean spaceleft statistics
+
+build: obj/dependencies bin/$(ROM).gb
+
+debug: CFLAGS += -DDEBUG --debug
+debug: LDFLAGS += -Wl-y
 debug: build
 
 src/data_strings.c: data/strings.json 
-	node ../stringc data/stringsMap.json $< $@
+	$(NODE) ../stringc data/stringsMap.json $< $@
 
 src/data_gfx_%.c: data/gfx/%.png
-	node ../img2gb -n $(notdir $(basename $<)) $< $@
+	$(NODE) ../img2gb -n $(notdir $(basename $<)) $< $@
 
-obj/dependencies: $(SRCFILES)
+obj/dependencies: $(SRCFILES) | obj/
 	@echo "regenerate dependency file"
-	@mkdir -p obj
-	@rm -f obj/dependencies
+	@$(RM) -f obj/dependencies
 	@for srcFile in $(SRCFILES) ; do \
 		{ printf "obj/"; $(CC) -MM $$srcFile; } >> obj/dependencies ; \
 	done
 
 -include obj/dependencies
 
-bin/BubbleFactory.gb: obj/game.ihx
-	@mkdir -p bin
-	node ../ihx2gb --name BUBBLEFACT --licensee DH --cartridge 0x1B --ram 1 --version 1 $< $@
+bin/$(ROM).gb: obj/game.ihx | bin/
+	$(MKROM) -Z -yn BUBBLEFACT -yk DH -yt 0x1B -ya 1 -yS -yp0x014C=1 $< $@
+	cp obj/game.sym bin/$(ROM).sym
+	cp obj/game.noi bin/$(ROM).noi
+	test \! -s obj/game.cdb || cp obj/game.cdb bin/$(ROM).cdb
 
-obj/game.ihx: $(OBJFILES)
-	@mkdir -p obj
-	$(CC) $(LINKFLAGS) $^ -o $@
+obj/game.ihx: $(OBJFILES) | obj/
+	$(CC) $(LDFLAGS) $^ -o $@
 
-obj/%.rel: src/%.c
-	@mkdir -p obj
+obj/%.rel: src/%.c | obj/
 	$(CC) $(CFLAGS) $< -o $@
 
-obj/%.rel: src/%.s
-	@mkdir -p obj
-	$(ASMC) $(ASMFLAGS) $@ $<
+obj/%.rel: src/%.s | obj/
+	$(AS) $(ASFLAGS) $@ $<
+
+%/:
+	@mkdir -p $@
+
+spaceleft: build
+	$(ROMUSE) bin/$(ROM).noi -g -E
+
+statistics: build
+	test \! -s bin/$(ROM).cdb || $(ROMUSE) bin/$(ROM).cdb -g
+	$(ROMUSE) bin/$(ROM).noi -G -E -sH -a
+
+run: build
+	$(EMU) bin/$(ROM).gb
 
 clean:
-	rm -rf src/data_*
-	rm -rf obj
-	rm -rf bin
+	$(RM) -rf src/data_*
+	$(RM) -rf obj
+	$(RM) -rf bin
diff --git a/ihx2gb/ihx2gb.js b/ihx2gb/ihx2gb.js
deleted file mode 100644
index 7445dc9..0000000
--- a/ihx2gb/ihx2gb.js
+++ /dev/null
@@ -1,257 +0,0 @@
-"use strict";
-
-const fs = require("fs");
-const path = require("path");
-const commander = require("commander");
-const Overflow = require("overflow-js").Overflow;
-
-function parseHexPair(string, index) {
-  return parseInt(string.substr(index, 2), 16);
-}
-
-function writeLogo(buffer) {
-  const logoBuffer = Buffer.from([
-    0xCE, 0xED, 0x66, 0x66, 0xCC, 0x0D, 0x00, 0x0B, 0x03, 0x73, 0x00, 0x83, 0x00, 0x0C, 0x00, 0x0D,
-    0x00, 0x08, 0x11, 0x1F, 0x88, 0x89, 0x00, 0x0E, 0xDC, 0xCC, 0x6E, 0xE6, 0xDD, 0xDD, 0xD9, 0x99,
-    0xBB, 0xBB, 0x67, 0x63, 0x6E, 0x0E, 0xEC, 0xCC, 0xDD, 0xDC, 0x99, 0x9F, 0xBB, 0xB9, 0x33, 0x3E
-  ]);
-  
-  logoBuffer.copy(buffer, 0x0104);
-}
-
-function writeTitle(buffer, title) {
-  if(title.length > 11) {
-    console.warn(`warning: title longer than 11 characters, later characters will be ignored`);
-  }
-  
-  if(/^[A-Z0-9 ]*$/g.test(title) == false) {
-    console.error("title may only have uppercase letters, digits, and spaces");
-    process.exit(1);
-  }
-  
-  const startAddress = 0x0134;
-  buffer.fill(0x00, startAddress, startAddress + 11);
-  buffer.write(title, startAddress, Math.min(title.length, 11), "ascii");
-}
-
-function writeManufacturerCode(buffer, code) {
-  if(code.length > 4) {
-    console.warn(`warning: manufacturer code longer than 4 characters, later characters will be ignored`);
-  }
-  
-  if(/^[A-Z0-9 ]*$/g.test(code) == false) {
-    console.error("manufacturer code may only have uppercase letters, digits, and spaces");
-    process.exit(1);
-  }
-  
-  const startAddress = 0x013F;
-  buffer.fill(0x00, startAddress, startAddress + 4);
-  buffer.write(code, startAddress, Math.min(code.length, 4), "ascii");
-}
-
-function writeCGBFlag(buffer, flag) {
-  buffer.writeUInt8(flag, 0x0143);
-}
-
-function writeLicenseeCode(buffer, code) {
-  if(code.length > 2) {
-    console.warn(`warning: licensee code longer than 2 characters, later characters will be ignored`);
-  }
-  
-  if(/^[a-zA-Z0-9 ]*$/g.test(code) == false) {
-    console.error("licensee code may only have letters, digits, and spaces");
-    process.exit(1);
-  }
-  
-  const startAddress = 0x0144;
-  buffer.fill(0xFF, startAddress, startAddress + 2);
-  buffer.write(code, startAddress, Math.min(code.length, 2), "ascii");
-}
-
-function writeSGBFlag(buffer, flag) {
-  buffer.writeUInt8(flag, 0x0146);
-}
-
-function writeCartridgeType(buffer, type) {
-  buffer.writeUInt8(type, 0x0147);
-}
-
-function writeROMSize(buffer, size) {
-  buffer.writeUInt8(size, 0x0148);
-}
-
-function writeRAMSize(buffer, size) {
-  buffer.writeUInt8(size, 0x0149);
-}
-
-function writeDestinationCode(buffer, code) {
-  buffer.writeUInt8(code, 0x014A);
-}
-
-function writeOldLicenseeCode(buffer, code) {
-  buffer.writeUInt8(code, 0x014B);
-}
-
-function writeROMVersion(buffer, version) {
-  buffer.writeUInt8(version, 0x014C);
-}
-
-function writeHeaderChecksum(buffer) {
-  let x = Overflow.ubyte(0);
-  for(let index = 0x0134; index <= 0x014C; index++) {
-    x = x.minus(buffer[index]).minus(1);
-  }
-  buffer.writeUInt8(x.value, 0x014D);
-}
-
-function writeROMChecksum(buffer) {
-  let x = Overflow.ushort(0);
-  for(let index = 0x00; index < buffer.length; index++) {
-    if(index == 0x014E || index == 0x014F) {
-      continue;
-    }
-    x = x.plus(buffer[index]);
-  }
-  buffer.writeUInt16BE(x.value, 0x014E);
-}
-
-function processMap(mapFilePath, symOutputPath) {
-  if(fs.existsSync(mapFilePath) == false) {
-    return;
-  }
-  
-  const regex = /^[\s]+([0-9A-F]{8})  _([a-zA-Z0-9_]+)/;
-  
-  const text = fs.readFileSync(mapFilePath, "utf8");
-  const lines = text.split(/[\n\r]+/g);
-  const addresses = [];
-  lines.forEach((line) => {
-    const match = regex.exec(line);
-    if(match == null) {
-      return;
-    }
-    const address = match[1];
-    const symbol = match[2];
-    
-    addresses.push({
-      "address" : address,
-      "symbol" : symbol
-    });
-  });
-  
-  const symbolLines = [
-    "; Generated by IHX2GB",
-    ""
-  ];
-  addresses.forEach((address) => {
-    symbolLines.push(`00:${address.address.substr(4)} ${address.symbol}`);
-  });
-  
-  fs.writeFileSync(symOutputFilePath, symbolLines.join("\n"));
-}
-
-commander
-  .usage("[options] <in_file> <out_file>")
-  .option("-n, --name [value]", "The name in the header. Default: \"MY GAME\"", "MY GAME")
-  .option("-m, --manufacturer [code]", "The manufacturer code. Default: \"\"", "")
-  .option("-c, --cgb [flag]", "The decimal Game Boy Color support flag. 128 for CGB+GB, 192 for CGB-only. Default: 0", "0", parseInt)
-  .option("-l, --licensee [code]", "The ASCII licensee code. Default: \"00\"", "00")
-  .option("-s, --sgb [flag]", "The decimal Super Game Boy support flag. 3 to enable. Default: 0", "0", parseInt)
-  .option("-t, --cartridge [type]", "The decimal cartridge type. Default: 0", "0", parseInt)
-  .option("-r, --rom [code]", "The decimal ROM size code. File will be 32KB << value, except for 82, 83, and 84. Default: 0", "0", parseInt)
-  .option("-a, --ram [code]", "The decimal external RAM size code. Default: 0", "0", parseInt)
-  .option("-d, --destination [code]", "The destination code. 0 for Japan, 1 for international. Default: 1", "1", parseInt)
-  .option("--oldlicensee [code]", "The decimal old licensee code. 51 to use new licensee code. SGB will not work if != 51. Default: 51", "51", parseInt)
-  .option("-v, --version [version]", "The ROM version. Default: 0", "0", parseInt)
-
-commander.on("--help", () => {
-  console.log("Go to http://gbdev.gg8.se/wiki/articles/The_Cartridge_Header for header details, including values for Cartridge Type, ROM Size, and RAM Size. That site lists codes in hex, but must be provided here in decimal.");
-  console.log("");
-});
-
-commander.parse(process.argv);
-
-if(commander.rom > 8) {
-  let n = 32768;
-  for(let i=0; i < commander.rom; i++) {
-    n *= 2;
-  }
-  console.error("rom size codes > 8 unsupported. Fun fact, you asked me to make a file " + (n) + " bytes big! Wow!");
-  process.exit(1);
-}
-
-if(commander.args.length != 2) {
-  console.error("must provide both an input and output file");
-  process.exit(1);
-}
-
-const inputFilePath = path.resolve(commander.args[0]);
-const outputFilePath = path.resolve(commander.args[1]);
-
-const inputFileDirectory = path.dirname(inputFilePath);
-const inputFileBasename = path.basename(inputFilePath, path.extname(inputFilePath));
-const mapFilePath = path.join(inputFileDirectory, inputFileBasename + ".map");
-
-const outputFileDirectory = path.dirname(outputFilePath);
-const outputFileBasename = path.basename(outputFilePath, path.extname(outputFilePath));
-const symOutputFilePath = path.join(outputFileDirectory, outputFileBasename + ".sym");
-
-processMap(mapFilePath, symOutputFilePath);
-
-const ihxText = fs.readFileSync(inputFilePath, { "encoding" : "utf8" });
-const ihxRecords = ihxText.split(/[\n\r]+/g).filter((record) => { return record.length > 0; });
-const gbBuffer = Buffer.alloc(32768 << commander.rom, 0xFF);
-
-let baseAddress = 0;
-
-ihxRecords.forEach((record) => {
-  let head = 0;
-  
-  if(record[head] != ":") {
-    console.error("not an ihx file");
-    process.exit(1);
-  }
-  
-  head +=1;
-  
-  const dataLength = parseHexPair(record, head);
-  head += 2;
-  
-  const address = baseAddress + (parseHexPair(record, head) << 8) + parseHexPair(record, head + 2);
-  head += 4;
-  
-  const type = parseHexPair(record, head);
-  head += 2;
-  
-  if(type == 0) {
-    // Data Record, copy bytes
-    for(let index = 0; index < dataLength; index++) {
-      const byte = parseHexPair(record, head);
-      head += 2;
-      
-      gbBuffer[address + index] = byte;
-    }
-  } else if(type == 1) {
-    // EOF Record.
-  } else {
-    console.error("unsupported record type");
-    process.exit(1);
-  }
-});
-
-writeLogo(gbBuffer);
-writeTitle(gbBuffer, commander.name);
-writeManufacturerCode(gbBuffer, commander.manufacturer);
-writeCGBFlag(gbBuffer, commander.cgb);
-writeLicenseeCode(gbBuffer, commander.licensee);
-writeSGBFlag(gbBuffer, commander.sgb);
-writeCartridgeType(gbBuffer, commander.cartridge);
-writeROMSize(gbBuffer, commander.rom);
-writeRAMSize(gbBuffer, commander.ram);
-writeDestinationCode(gbBuffer, commander.destination);
-writeOldLicenseeCode(gbBuffer, commander.oldlicensee);
-writeROMVersion(gbBuffer, commander.version);
-writeHeaderChecksum(gbBuffer);
-writeROMChecksum(gbBuffer);
-
-fs.writeFileSync(outputFilePath, gbBuffer);
diff --git a/ihx2gb/package-lock.json b/ihx2gb/package-lock.json
deleted file mode 100644
index 78345e8..0000000
--- a/ihx2gb/package-lock.json
+++ /dev/null
@@ -1,26 +0,0 @@
-{
-  "name": "ihx2gb",
-  "version": "0.0.0",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "commander": {
-      "version": "2.9.0",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.9.0.tgz",
-      "integrity": "sha1-nJkJQXbhIkDLItbFFGCYQA/g99Q=",
-      "requires": {
-        "graceful-readlink": ">= 1.0.0"
-      }
-    },
-    "graceful-readlink": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/graceful-readlink/-/graceful-readlink-1.0.1.tgz",
-      "integrity": "sha1-TK+tdrxi8C+gObL5Tpo906ORpyU="
-    },
-    "overflow-js": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/overflow-js/-/overflow-js-1.0.0.tgz",
-      "integrity": "sha1-G8S//0Qg5Rc5ZuvWd8SASR7phPA="
-    }
-  }
-}
diff --git a/ihx2gb/package.json b/ihx2gb/package.json
deleted file mode 100644
index 2aa81c8..0000000
--- a/ihx2gb/package.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "name": "ihx2gb",
-  "description": "converts intel ihx files to game boy format",
-  "version": "0.0.0",
-  "main": "ihx2gb",
-  "dependencies": {
-    "commander": "~2.9.0",
-    "overflow-js": "~1.0.0"
-  }
-}
diff --git a/img2gb/package-lock.json b/img2gb/package-lock.json
index 1995d27..f1f5bd5 100644
--- a/img2gb/package-lock.json
+++ b/img2gb/package-lock.json
@@ -1,7 +1,7 @@
 {
   "name": "img2gb",
   "version": "0.0.0",
-  "lockfileVersion": 1,
+  "lockfileVersion": 2,
   "requires": true,
   "dependencies": {
     "commander": {
diff --git a/makefile b/makefile
new file mode 100644
index 0000000..4648552
--- /dev/null
+++ b/makefile
@@ -0,0 +1,19 @@
+.PHONY: build debug tools run clean
+
+build: tools
+	$(MAKE) -C game/ $@
+
+debug: tools
+	$(MAKE) -C game/ $@
+
+run: tools
+	$(MAKE) -C game/ $@
+
+clean:
+	$(MAKE) -C game/ $@
+	$(RM) -rf img2gb/node_modules stringc/node_modules
+
+tools: img2gb/node_modules stringc/node_modules
+
+%/node_modules:
+	cd $* && npm install
\ No newline at end of file
diff --git a/stringc/package-lock.json b/stringc/package-lock.json
index 64f85c0..900a929 100644
--- a/stringc/package-lock.json
+++ b/stringc/package-lock.json
@@ -1,7 +1,7 @@
 {
   "name": "stringc",
   "version": "1.0.0",
-  "lockfileVersion": 1,
+  "lockfileVersion": 2,
   "requires": true,
   "dependencies": {
     "commander": {