All the mods here (besides mystcraft) are not required to play a game of bookball. I just used them to build the arena.
Bookball is a Minecraft minigame where you kick a book around. It is very slow most of the time (if not all the time). On my pre-built map, you can play in duels or teams, and it's easy to spectate.
Mod list
Chisel
Mekanism
Mystcraft
Portality
- Tinkers Construct
- The rest are just requirements
If you use the pre-built arena, the games will probably take 10 years.