The standard d20. Used for most DC checks in most roleplay games, this is the dice that determines whether you successfully attack an opponent or fail your climb check.

A d12. A rare one, not called for much, but some weapons use it as their damage roll. You can imitiate it with two d6s.

A set of d10s. These are mostly used for probabilty rolls and some damage rolls.

A d8

A d6. A standard dice that everyone's familiar with.

A d4. Not much call for these, they're not used a lot.