Dotty The Kangaroo ZX

You play the part of Dotty the kangaroo who has been put on a course to test his intelligence and physical ability. Work your way through several levels and find the exit before you fall into a shark-filled pool.
Originally written in 1984 for the 16K ZX Spectrum by Ian McTavish, now back on iOS and macOS.
This is a recreation of the original ZX Spectrum version of the game on iOS.
A speed run mode is available:
• on macOS, press the 'S' key to start the game in speed run mode.
• on iOS, double tap to start the game in speed run mode.
• complete the 4 levels twice (normal and hard mode) and your fastest time will be recorded in the Speed Run Leaderboard.
Features:
• Guide Dotty through four levels by jumping on the platforms
• Open the door by reaching the red block
• When all levels are completed, the game gets harder
• Touch screen control on iOS, original keyboard controls on macOS
• Game Center™ support with high scores and achievements.
• Speed run: complete the 4 levels in normal mode and hard mode and record you fastest time.