Neglected game powers Undertale mod after massive player activity

Sometimes the most surprising hits in gaming don’t come from massive marketing campaigns or viral streamers; they emerge from quiet corners of the internet, driven by pure, accidental community ingenuity. This is the unexpected story of how an indie platformer found a second life, not through its own merits alone, but thanks to a clever piece of fan-made software.

The origin story begins with Crashphalt, the first completed game developed by indie developer RetroSpecter and released on Steam in 2018. For years, it existed quietly, attracting a modest number of players, barely managing a dozen enthusiasts over its lifespan. It was a project that achieved completion but remained largely unseen.

Then, something shifted. Months after the game’s initial release, RetroSpecter noticed an anomaly on Steam. Crashphalt suddenly boasted over 500 reviews—a massive surge that seemed disproportionate to the game’s history. Intriguingly, these new reviewers weren’t talking about Crashphalt itself; they were passionately discussing another world: Undertale.

This shift in focus prompted a deeper dive into the community discussions, where players were openly reminiscing about their favorite RPGs. One reviewer wondered aloud if anyone wanted to play Undertale with them, while another jokingly called Crashphalt “the best game to never actually play.” It was clear that the original platformer had inadvertently tapped into a shared passion.

The key to unlocking this unexpected renaissance lay in a fan-made mod known as Undertale Together. This mod was designed for local co-op but possessed a unique limitation that players figured out how to bypass, opening up possibilities for online play.

The breakthrough came when developers realized they could creatively combine the files of Crashphalt with the framework of Undertale Together. By copying the game’s install files into a modified directory and renaming the executable, players were able to trick Steam into recognizing the platformer as a suitable host for multiplayer Remote Play. This ingenious workaround allowed what was essentially a local-only mod to engage in cross-platform online sessions.

The results of this digital alchemy were staggering. Looking at Crashphalt’s SteamDB charts, the player count experienced an astronomical leap between November and December 2022. Daily player numbers skyrocketed from six to 107, representing an astonishing increase of nearly 1683%. This massive spike coincided with the release timeline of the mod and other related content.

The story didn’t end there. A further surge in activity was observed in June 2025, coinciding with the full paid launch of Deltarune. While the exact reason why the creator of Undertale Together chose Crashphalt as the focal point remains a mystery, the impact was undeniable.

RetroSpecter reflected on this journey, noting that while the player numbers might not have been for Crashphalt alone, seeing the game find this unconventional second life was truly cool. The developer viewed it as a generous response to what could otherwise be seen as an irritation: an unexpected opportunity for friends to play together.

RetroSpecter ultimately shared a note of appreciation with Undertale’s creator, Toby Fox, suggesting a path forward for collaboration. The experience demonstrated that sometimes, the most profound community connections are forged not in direct development, but through the shared spirit of creativity and adaptation.