I wanna ask the same question too, my 3 yrs old son likes,

- color code by smart games
- Chutes and Ladders
- hoot owl hoot
- memory games
- snug as a bug
(but now he likes to make his own game and rule and ask us to play with him)

other than games, are u asking about toys as well?

My son actually likes art work more,
- mosaic art
- suncatcher

and Magna tiles, Dot-to-dot and activities books are his favorite too.