Spirit Lords is a free-to-play action RPG for Android that includes in-app-purchases that range from $0.99 - $99.99 per item.
Pro Fun collecting and fusion aspects
There are collectable spirits in the game, that add new player abilities. These spirits can then be fused in order to upgrade the abilities they grant. This makes for an addicting aspect, trying to collect the spirits one needs in order to level up their players abilities.
Pro Mobile oriented gameplay
With even the longest of levels in the game only lasting a few minutes, Spirit Lords makes for a great game to play on the go during short bursts of downtime.
Pro Touch controls work well
The touch controls feel very intuitive using swipes and gestures as well as on screen buttons. Every virtual button press and swipe feels responsive.
Pro Immersive mode
Spirit Lords has implemented immersive mode on Android devices on version 4.4+.
Con Hobbled by wait times pay to win mechanics
Spirit Lords, like most free-to-play games, utilizes forced wait times that can only be mitigated by paying real money (or just waiting). On top of this, there is also equipment that is highly powered that can only be purchased through in-app-purchases, making the game pay to win by forcing payment for equipment that makes the game easier and removes false walls. While many can ignore these false limitations, they are arguably an annoyance only set in place in order to earn money through peoples impatience.