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:

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