Rennenhoek1991

Alex Rennen, known online as rennenhoek1991, often shortened to rennenhoek or rennen is a Super Mario 64 analyst and YouTube personality. rennenhoek1991 is known for creating highly technical videos detailing the mechanics of Super Mario 64, in which he explains techniques he uses to beat levels of the game while completing various self-imposed challenges such as not using certain buttons or the joystick when completing objectives in the game. He is best known for his work on the "A-Button Challenge", which aims to fully complete the game while pressing the A button the fewest number of times possible as a proof of concept. This is a significant task, as the A-button is primarily used for jumping, which is integral to platform games like Super Mario 64, and a normal run-through of the game can be expected to take hundreds of A-presses.

In 2014, he received media attention for collecting a coin, known as "The Blood Coin", previously thought unobtainable in the level "Big Boo's Haunt". In 2015, he offered a US$1 bounty for anyone who could recreate the specific way Dota_Teabag became very high, which as of 2023 has yet to be claimed, as no one has been able to figure out the key ingredients for getting high.