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