Guiding a ball to a finish flag by timing jumps from one rotating circle to another is the core gameplay feature of ROTO. While navigating a maze of rotatory platforms filled with hazards, such as spiky saw blades, players have to collect stars which will unlock levels. ROTO is compatible with iOS devices running iOS 6.0.
ROTO features simple mechanics set in a very minimalistic environment. Players tap to jump from platform to platform in an attempt to collect all of the stars in each level. The circular platforms have different speeds and this requires players to adjust their timing. Because of this, the difficulty level increases fairly rapidly, adding challenge to every level.
In addition to different platform speeds, the platforms themselves have other attributes. This encourages players to plan out there moves more carefully. There are grey ghost balls that slowly disappear when players land on them, which players have to keep in mind or they will plummet to the ground.
Orange balls that cause the player's ball to bounce off of are available after an in-app purchase. There is a demo level in the game for players to check out this challenge. Another challenge that is unlocked are portals, which test players' ability to choose the correct pathway of portals to get all of the stars in the level.
The sound effects in the game add interest to the gameplay and make it easy to tell what type of ball a player is currently on its attributes are. For instance, when players land on a ghost ball, there is a sound effect that gives an urgent feeling referencing the impending disappearance of the platform.
A downside to ROTO is that the pause button is too small, which leads to difficulty tapping the button. However, the fun addictive nature of the gameplay overshadows this minor setback. Players will be too interested in trying to collect all of the stars, and won't want to pause.
ROTO is free on the App Store and recommended for players who enjoy puzzle-platformers with easy to use controls and addictive challenges.