He created an interpreter for the programming language BASIC and an emulator for the 1977 home video game console Atari 2600 in Minecraft.

In 2017, Cooper Harasyn and SethBling created a jailbreak by hand using exploits to save a hex editor onto a read-only memory cartridge, allowing for creation of mods.

[21]:67 SethBling had the Sega Genesis home video game console, and played a lot of Sonic the Hedgehog on it.

[18] SethBling got into the technical community and was quick to discover redstone, a programmable resource in Minecraft,[a] and began uploading videos of his creations to YouTube weeks later.

I actually played for several hours without looking at the wiki because I didn't want to spoil the game, and my roommate came home to see me huddling in a dirt castle.

Engadget's Jordan Mallory wrote that SethBling's replica "[manages] to capture the innocence and nostalgia of our 8-bit youths".

As players gain killstreaks, they may purchase upgraded weapons, arrow-shooting towers, barriers and traps for zombies.

Julian Benson of PCGamesN said that the minigame takes the "stronghold mentality" of Plants vs. Zombies, the traps of Orcs Must Die!, and the upgrade system of the FPS Killing Floor.

[b][44] SethBling also recreated a spinning Stargate, a moving sand wave and the Microsoft Office assistant Clippy.

After the Mega Gargantua fight, Cubehamster wanted them to "turn [it] into a game which focuses on firing missiles at each other and trying to blow them up".

[51] The Splatoon minigame is similar to the Wii U game, in that two teams of up to four players compete to paint as much of the ground and walls as possible in three minutes.

[51][55] In 2015, SethBling worked with Verizon to create a web browser and to introduce text messaging and video calling functionality to Minecraft.

[60] The build features a virtual keyboard; a whiteboard, which displays the code; and a programmable turtle, which can mine and place blocks.

[57][64] SethBling had the emulator run the original Atari 2600 read-only memory cartridges for the games Space Invaders, Pac-Man, and Donkey Kong.

The "Add-On" was titled Castle Siege Battle and was criticized by Kotaku's Robert Gurthrie for causing glitches.

It then took him around fifteen minutes to "technically" tie the world record of 5.57 seconds for the racing video game Dragster.

[72] By successfully executing the glitch on a Super NES console, SethBling validated the faster, emulator run by JeffW356.

In the game, SethBling executed certain actions and pixel-precise moves like duplicating Yoshi blocks and launching a red shell at a specific pixel.

"[77] In June 2015, SethBling wrote an artificial intelligence (AI) program called MarI/O that plays Super Mario World.

The video footage used for training MariFlow contains interactive sessions in which SethBling occasionally takes control of the character.

[90][91] SethBling first extended the level timer[91] and used a power-up incrementation glitch to allow external code to run.

[92][93] SethBling then created a bootloader to be able to launch the Flappy Bird-like code that he would later write into unused memory with precise Mario movements and spin-jumping.

[94] Super Mario World had been modified to emulate other games before by automatically feeding pre-recorded controller input into the console via a computer, but SethBling was the first to do it exclusively by hand.

[89][92][94][95][96][97] SethBling and Cooper Harasyn placed a full hex editor and gameplay mods onto a stock Super Mario World cartridge in May 2017, only using standard controller inputs.

Harasyn discovered an exploit that lets a player write data to 256-byte save files that are permanently stored on a Super Mario World cartridge.

In-game mods, such as support for the Super NES Mouse and giving Mario telekinesis powers, can be written to a save file using the hex editor.