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:

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