Quest Trio is three games (hence the trio) in one. Jewel Quest is a modified version of Bejeweled where you have to swap jewels to get three or more of one kind in a row. This is timed and definitely gets harder and more challenging.
In Jewel Quest Solitaire you have to eliminate cards by placing one higher or one lower than the card on the discard pile. The key is to look for series that you can carry on for awhile and get rid of the most cards. This also has many levels that get harder and harder (more cards are stacked in a "locked" pile or a pile with one card to eliminate on top before you can access all the others behind it.
The last game is Mahjong, traditional but with some twists. You can play this by just doing the standard Mahjong game, by only showing available matches (the other tiles are blank so it is harder to plan ahead) or by only revealing tiles that you turn over - almost like a memory game.
Additionally, there are three ways to play Mahjong boards - classic, on a quest, and boards with custom tiles.
This game holds your attention for a long time and is a great way to destress and work your brain a little.
I would highly recommend this game if you like puzzles and board games.