GB BASIC
GameBuilder BASIC (GB BASIC) is a retro Fantasy Console that generates ROMs compatible with the popular handheld game console.
Estimated lifetime revenue
Free-to-play
Revenue comes from in-game items and microtransactions, which our price-based model doesn't estimate. The player count below is how many people own it, not what they spent.
Est. players
569
people who own it
Reviews
14
Review score
93%
9.3/10
Concurrent players
0
read Sep 17, 2026, 15:00 UTC
Followers
About
About the game
GameBuilder BASIC (GB BASIC) is a retro Fantasy Console that generates ROMs compatible with the popular handheld game console. It has everything ready-to-use for writting code, making assets, compiling projects, running with the built-in emulator, exporting to runnable ROM, etc.
GB BASIC is programmable in a brand new BASIC dialect. The integrated assets editors are intuitive to use. You can generate real ROMs and play on any GB emulator or hardware.
Why GB BASIC?
GB BASIC is programmable in a brand new BASIC dialect. The integrated assets editors are intuitive to use. You can generate real ROMs and play on any GB emulator or hardware.
- GB BASIC compiles fast
- GB BASIC generates ROMs for various mappers, devices and emulators
Features
- Programmable in BASIC, an easy to learn and fun to use programming language
- Easy to use API for graphics, input, audio, and other facilities
- Built-in libraries for scene, actor, controllers, GUI
- Built-in libraries for collision detection, persistence, RTC, etc.
- Extension feature including mouse & touch, shell command, debugging, etc.
- Handy tools for editing tiles, map, scene, actor, font, sound, etc.
- Project can be exported into real ROM
- Dozens of example projects
Specs
- CPU: 4.19MHz/8.38MHz for classic/colored respectively
- Threads: up to 16 concurrent execution contexts
- Display: 160x144px
- Code: BASIC, supports multiple source pages
- Gamepad: 8 buttons (D-Pad + A/B + Select/Start)
- Mouse and touch: supported by extension
- Tiles: up to 256 units per page
- Map: up to 255 tiles in one dimension per page; two layers (graphics, attributes)
- Sprite: supports 8x8 and 8x16 sprites
- Scene: up to 255 tiles in one dimension per page; four layers (map, attributes, properties, actors)
- Actor: up to 8x8 tiles per frame; up to 256 frames per page
- Font: supports TrueType (.ttf) and bitmap-based (.png .jpg .bmp .tga); up to 16px; 1bpp or 2bpp
- Audio: 4 channels; supports importing from JSON, VGM, WAV, FxHammer
- Palette: 2bit (4 colors) per tile, palette of map and actor is configurable for colored device
- GUI: supports label, progress bar, menu, etc.
- Persistence: supported
- RTC: supported
- Serial port: supported
Programming Paradigms
- Imperative paradigm
- Non-structured programming
- Concurrent processing approach
- Non-structured programming
- Declarative paradigm
- Data driven approach
- Data driven approach
