M21 FOR TWO BROWSERBASIC DISK 1.11.2023

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.