Robert Topala

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Robert Nicholas Christian Topala, also referred to as RobTop, jokingly as RubRub and as Zhenmuron on Reddit and formerly on Newgrounds, is a Swedish game developer and the founder of RobTop Games. He has created the mobile games Rune, Boomlings, Boomlings MatchUp, Memory Mastermind, Forlorn (which was lost until the TestFlight Terascrape revealed archived beta versions),^[1] Geometry Dash and its lite version and expansions, Geometry Dash Meltdown, Geometry Dash World, and Geometry Dash SubZero. Geometry Dash was released on 13 August 2013.

Biography

Topala was studying civil engineering when he first began exploring video game development, having only basic programming knowledge at the time. He described creating his first game Bounce ball thingy as 'a fun side project that might even get me a little spending money.'^[2] It was the experience in developing puzzle games that helped him as he developed Geometry Dash over four months, along with the inspiration from platformer games he grew up playing such as Super Mario Bros. and more recent iOS titles including The Impossible Game, BIT.TRIP RUN! and Super Meat Boy. Topala credited the community following of Geometry Dash for helping the game grow and evolve through their support and feedback. The level editing and sharing features enabled players many creative opportunities, as well as Topala, who innovated throughout the game's flow of updates. The integration of the now-defunct Everyplay gameplay video-sharing service also contributed to spreading word of the game. Geometry Dash and its lite version, along with later expansions, soon climbed in popularity and achieved millions of downloads worldwide.

“

There really was no detailed plan for [Geometry Dash]. It simply started as a template with a cube that could crash and jump. Through different iterations I then kept adding more and more features and content until the game felt right.

~ Robert Topala; Cult of Mac

Trivia

In March 2015, Topala participated in a Q&A hosted by the Geometry Dash Wiki, where wiki staff forwarded him questions submitted by wiki members which he then answered, his responses being posted on the wiki's old forum.
Topala hosted an Ask Me Anything on r/geometrydash on 16 July 2022, revealing the following, among other information:
- Topala's Newgrounds username Zhenmuron is derived from the name of the character Zenmuron in the fighting game Dark Rift.^[3]
- Topala changed the game's name to Geometry Dash from Geometry Jump because 'Apple said I wasn't allowed to have Geometry Jump'.^[4]
- Topala spends all day working on Geometry Dash, but he believes that many aspects involve more than just developing new updates.^[5]
Topala's Geometry Dash account has one creator point, derived from his only rated online level, the 2025 April Fools' Daily Level Explorers.
- Topala previously had three platformer levels briefly rated in the buildup to Update 2.2 to test future mechanics, but they were all quickly unrated and deleted.
Topala's net worth is around 475 million Swedish Krona (~50 million USD) as of 2025.
- A subsidiary of his company also trades horses.

Music

Guitar music recording
'BoomMenu noFlute' music for Boomlings

Gallery

Robert Topala, a widely circulated photo
Topala's Geometry Dash account (2026-03-21)
Topala as the Geometry Dash character RubRub, appearing in an update sneak peek