Instructions

Arrows - move the cursor
Space - place neutron

Eliminate all the enemies neutrons, by blowing them up with explosions.
You create an explosion by placing more neutrons on a square than it can carry. The square limits are as follows:

Corners - 2 neutrons
Borders - 3 neutrons
The rest of the board - 4 neutrons

Download source

Download source: beamtrons-0.3.zip

Beamtrons v0.3 by Peter Boné - 02/01/2005