In late 2025, the release of Deltarune's Chapters Three and Four offered a rare unspoiled experience for a guide writer, emphasizing the thrill of discovering hidden eggs. These collectibles, literal items in the game, tie into the narrative through surreal depictions of the protagonist's past. The chapters, developed by Toby Fox of Undertale fame, rewarded exploration with puzzles and environmental clues.
The Eurogamer article, published on December 27, 2025, reflects on how Deltarune's latest installments revived the excitement of secret hunting amid the author's professional demands to preemptively spoil games for coverage.
Deltarune, which began as the 'Survey Program' in 2018 from Undertale creator Toby Fox, introduced hidden eggs in its first chapter. The writer recalls stumbling upon the first egg behind a tree during an area transition on Halloween night, leading to a fridge for storage. This mechanic persisted into Chapter Two in 2021, where collecting the egg became a priority, building anticipation for deeper integration.
Chapters Three and Four launched on December 26, 2025—the day before the Nintendo Switch 2—allowing the author to play without research obligations. Chapter Three featured the most intricate hunt: triggered by a humorous dialogue choice near the final boss, it involved backtracking, puzzle-solving, and luck to reach a room titled 'Clear Egg Importance.' The process culminated in reuniting with the 'egg man' tree, unlocked via a cryptic dialogue tree.
In contrast, Chapter Four's egg was simpler, hinging on environmental observation rather than elaborate puzzles. Both discoveries felt rewarding, as the eggs evolved into narrative elements—surreal retellings of protagonist Kris's childhood, enhancing the theme of hidden information from the player.
The author theorizes that collecting all eggs will provide crucial context to Deltarune's events, fueling investment beyond typical collectibles. This approach echoes Undertale's tied mechanics, promising more in Chapter Five, expected in 2026. The experience underscored the value of unguided exploration in an era of pervasive spoilers.