Arcade by Kongregate

Kongregate: Arcade 2.0

Thousands of free games online and hundreds available on their smartphone version. The games can range from extremely simple to huge role  playing complex adventures.

Phone version

Online/PC version

Here's why this is a 90% program...
Pros

1. Fun games
2. Smooth game play
3. Ability to earn points and keep progress

Cons

1. Not all games available to play even with wi-fi

Rating: 9 out of 10 (90%)

Got it at:
Kongregate: Free