Doodle Jump

Hippity hop your way to the top in the official Doodle Jump game! This thrilling platform game has you jumping upwards to infinity, grabbing boosts and avoiding beasts on your way up. Move on up!
How to Play
Jump endlessly upwards
To play Doodle Jump simply move left to right to reach the platforms. Left-click to shoot. The gameplay is endless, so jump for as long as possible to achieve your greatest score.
Boost your Doodle Jumper
There are several ways to move faster and build your score quicker in Doodle Jump. The first way is to use the springs to bounce your little alien higher. You’ll also come across rocket boosters and a propeller hat that will boost you further up.
Dodge obstacles
Along with boosters to propel your alien to new heights, there are obstacles that add an extra challenge to the gameplay. The first threat you’ll encounter is brown platforms that break on contact, but these are a small problem.
The most troubling threats are aliens and black holes. Make sure you jump cautiously to avoid headbutting one by moving up too hastily. This also makes it easier to shoot them and proceed forwards.
Similar Games
Endless platform games are simple yet so fun they often provide more replayability than some complex games. Square Bird is also a simple platform game much like Doodle Jump but on horizontal axes. 
Features

Fun, endless gameplay
Power-ups to boost you upwards
Various obstacles that present a challenge
Seamless performance on desktop and mobile

Release Date
The initial release date is April 2009 as a mobile game, and from January 2017 can be played online.
Developer
Doodle Jump was made by Lima Sky.
Platforms

Web browser
Android
iOS
Controls

Left and right arrow to move
Left click to shoot