Atomic Bomberman doesn’t work under Windows 7 correctly. The colors are messed up. This is actually a well known problem.
There are 2 solutions (use the one you find better):
- run the BM95_fix_color to create windows registry compatibility records for bm.exe and bm95.exe (this is a file from the link above that contains also bm.exe record that had to be added in order to work for me)
- copy the BM95_win7 attached to atomic bomberman directory and use it to launch the game, the batch file closes iexplore (taskbar) that somehow causes the problem and relaunches it again after the game is closed