Meridian Gravitas

You are the little pink guy, with the white collar. Arrows to move around. Space to thrust upwards. Insert to fire (in the direction of last movement). The little triangles on the edges of the room indicate you can go through the door to the adjoining room. Moving over X's increaes the X counter, which otherwise runs out, causing the loss of a life. The X's shrink to little x's when used. If you don't want to use one, thrust above it as you pass over it.

Thrusting upwards on a diamond causes teleportation to another room. Teleport diamonds with a vertical line are entry-only, with a horizontal line are exit-only. Again, to avoid activating, thrust when passing.

The aim is to visit all the hollow small squares (called "nodes"), turning them solid. Squares with the pyramid shaped spikes on them kill you on contact. Various shaped bad guys move about and kill you on impact.