Happy Color® – Coloring Games vs World of Goo 2

How do Happy Color® – Coloring Games and World of Goo 2 compare on difficulty, ad pressure, in-app-purchase pressure and what real reviewers say? A side-by-side look, grounded in App Store data.

	Happy Color® – Coloring Games	World of Goo 2
Genre	Puzzle	Puzzle
Price	Free	Paid
Difficulty	easy	hard
Ad intensity	high	none
In-app-purchase pressure	medium	none
Typical session	variable	medium
Rating	4.8 / 5	4.1 / 5
Ratings count	3,398,350	50
Reviews say	What players like Calming and meditative for anxiety/ADHD Vast library of pictures including Disney content Satisfying animated playback on completion Common complaints Excessive ads interrupt coloring mid-session Ads pop up and open browser tabs without permission Touch sensitivity issues requiring multiple taps	What players like Outstanding soundtrack and art design praised as beautiful and haunting Engaging puzzle mechanics with new goo types and creative level design Faithful sequel that recaptures the magic of the original Common complaints No in-game way to mute music and sound independently from device settings Crashes on specific levels prevent progression (Soggy Bottom, Coolant Circulator Infiltrator, level 3) Missing iCloud cross-device save synchronization

Happy Color® – Coloring Games — A relaxing color-by-numbers game with 40,000+ pictures designed to calm anxiety and ADHD through meditative coloring. (rated easy difficulty, high ad pressure) World of Goo 2 — Build magical structures and solve physics-based puzzles with strange new species of sentient goo in this gorgeously crafted sequel. (rated hard difficulty, none ad pressure)

Data: Apple App Store, as of 2026-08-24. Last updated 2026-08-24.