Idle Painter

Grinding - Being required to perform repetitive and tedious tasks to advance.

Advertisements - Forced to watch ads or given rewards for watching ads.

Infinite Treadmill - Impossible to win or complete the game.

Can't Pause or Save - The game does not allow you to stop playing whenever you want.

Social Pyramid Scheme - You get a bonus for inviting your friends and then they have to invite their friends.

Social Obligation / Guilds - To avoid letting down your friends, you are obligated to play when you don't want to.

Friend Spam / Impersonation - The game sends spam to your contact list or social media account.

Reciprocity - Feeling obligated to return a favor, share resources, trade an item, etc.

Encourages Anti-Social Behavior - The game incentivizes players to lie, cheat, or backstab other players to get ahead.

Fear of Missing Out - If you stop playing you'll miss out on something or be left behind and unable to catch up.

Competition - The game makes you compete against other players.

Complete the Collection - The urge to collect all the items, achievements or secrets in a game.