Collisions of all shots with players and enemies are now pixel-perfect
All multiplayer levels have been improved
single player mode added 
minor change to how dug-out/destroyed ground looks 
Tapped rockets are faster
You can stand on enemies, they can stand on you and each other
Explodable crates added
weapon added: cluster bomb
Nail bomb, laser ball and gas bomb all have better physics (grenade physics)
Petrol bomb and mole bomb will now collide with enemies
Rockets and jets now have more pictures of rotation
Enemies can now bounce on springs 
Sound panning and volume changes depending on positions relative to the screen 
Changed the enemy spawning system in 2 player mode
Wirl wind added

Fixed flicker from palette setting
Added game speed control file