Sun Vegas has a library that rounds off at just over 950 games. While it's not as big as the other offerings on this list, it's still big enough to please most online players. As usual, slots are the main event and make up around 80% of what's available to play.

Trips (Three of a Kind)
Cons
2,000+ games

Some no deposit casinos will allow you to use these free spins on whichever game you fancy, however most will specify in the terms and conditions of their offer the specific slots they can be used on.