Freaksquad is a project mainly written in Python, it's free.
An isometric game engine
WHAT IS IT?
An isometric game engine.
CONTROLS
arrow keys move the cursor/subcursor in the plane
with shift move soldier
pgup/down move the cursor/subcursor vertically
numpad, or
qweadzxc put/remove a wall in one direction (se below), at the cursor
space toggle floor: block/half-block/floor/nothing
r/t rotate the whole view by +/-90 degrees
k/l Save/load level. Filename input from the terminal.
NOTES