Puzzle Retreat is a real challenge in the later stages. If you've managed to conquer it for the time being, you might like some of these other games:

4 Pics 1 Word Help
4 Pics 1 Word Help
TwoDots tips
TwoDots tips
This + That Answers
This + That Answers
Guess The 00s Answers
Guess The 00s Answers
What's The Band Help
What's The Band Help
WordBrain answers
WordBrain answers
Icomania Help
Icomania Help
Icon Pop Help
Icon Pop Help
Hello Stars answers
Hello Stars answers
Monument Valley Videos
Monument Valley Videos
Flow Free Answers
Flow Free Answers
Pic Combo Help
Pic Combo Help
4 Pics 1 Song Help
4 Pics 1 Song Help
GTA 5 Help
GTA 5 Help
Lazors Answers
Lazors Answers