During installation a selection screen with two options, for example Grown Up and Play Ground could be shown.
Choosing Grown Up will install basic functionality with bloodsplash, explosions, zombies and Play Ground installs basic functionality with childproof characters, settings etc.
For these functionality I think it is needed to categorize models, characters etc. so they will fit in one of both play modes.
Smart Packer Pro - Distribute games and applications
V-Packer for Games - Compress your game files into one executable
Flash Packer - Pack your Flash movies