M21 FOR TWO ATARI 1.11.2023

This is a game for ATARI ST mono emulators. It is made with GFA-BASIC
and GBE. It is not tested on a real machine and it is possible, that
it can't be run on it. You can try to run M212.PRG or M212.GFA
in a GFA BASIC interpreter. M212.PRG runs with the emulator hatari
1.8.0 and its built-in EmuTOS-image
(https://hatari.tuxfamily.org/download.html).
GFA BASIC was chosen as programming language to write a program compatible
to EmuTOS. The game can also be run with hataroid and its built-in
EmuTOS-image. hataroid is available for Android devices.
The .LST file was written with the Windows X editor and merged and
compiled with the programs coming with GBE. GBE ran with the operating
system FreeMint 1.19 and the emulator ARAnyM 1.1.0 and the result was
tested with the ATARI emulator hatari 1.8.0.
This is a 2D version of the Astro Solutions game Mission 21 (M21)
for one or two players. The first player uses the cursor keys. The
second player uses the keys s, y (or z), x and c.
You must collect the orange stones and avoid crashing into the
yellow stones with the red X. The players play together.
There is a time limit for each level.
Other M21 versions:
M21 (DOS, 1998)
M21 (ATARI, 2023, in BASGAMES GFA)
M21 (BrowserBasic2.05,
BrowserBasic2.05dp, 2021)
M212DOS (DOS, 2023, two players)
M21 For Two (2D, JAVA, 2023, one or two players)
M213D (JAVA, 2023)
M213D2 (JAVA, 2023, two players)