"Spikes you can jump over using the up arrow, but bouncing balls you must go under. Use left and right arrows to go left and right [Kinda obvious], but don't go too far!" instructions from
Updates 1.0.0 - 3 skins and spikes and balls as obsticles 1.1.0 - 1 new skin and new blue coins that give you 5$ not 1$ and the update sign is now at the bottom. 1.2.0 - a new skin and green coins that give 10$ and double spikes which are faster that normal spikes. Weird skin menu effect fixed. You have 10 live now and the take shape of how the numberblocks would normally. 1.2.1 - Skin button changes and green coin more common. 1.2.2 - Character size changes but 4's are really noticeable. 1.3.0 - Numberblock 5 has a size change and 2 new skins along with the red coin. 1.4.0 - 4 new skins and Purple coins and the special Shamrock coin the lasts till April 1st. 1.4.1 - Numbers have colors but 7 and 9 will get the rainbow and grey scale (when I have my computer mouse.) 1.5.0 - Coming soon!