BASIC 10 liner "Beyond the door"
BEYOND THE DOOR (10 LINER) is a game written in ugBASIC and that runs on various 8-bit home computers. The aim of the game is to exit from a maze, choosing the right door and avoiding the monster that chase you. You have a limited time to choose, and to explore the various doors. It is a self-competiting game, and it is designed for one player.
Click here to read the instructions on how to play.
Click here to download the executables for the various home computers:
- ATARI 400/800 [XEX or ATR format] (more info)
- COMMODORE 64 [PRG or D64 format] (more info)
- TRS-80 COLOR COMPUTER 1/2 [DSK format] (more info)
- TRS-80 COLOR COMPUTER 3 [DSK format] (more info)
- AMSTRAD CPC 664 [DSK format] (more info)
- MSX [ROM format] (more info)
- ZX Spectrum 48K/128K/+2 [TAP format] (more info)
This game joined the "BASIC10Liner" competition 2025.
Source code (common to all platforms)
COMMODORE 64
TRS-80 COLOR COMPUTER 1/2
TRS-80 COLOR COMPUTER 3
AMSTRAD CPC 664
MSX
ZX Spectrum 48K/128K/+2
Since it joined this competition, the game itself is modest in size, the given source code respects strong constraints on the length of each line (category: EXTREME-256) and it does not rely on third party libraries. Moreover, since it uses specific features of each home computer, there is a specific ugBASIC source for each one. The check on constraints has been done using UGBASIC-IDE.
For those wishing to deepen the details of its implementation, please refer to the commented source code (for ATARI 400/800).