どんぐりGAME (Donguri GAME, "Acorn Game") is a POPS & ANIME category song by Japanese singer-songwriter こっちのけんと (Kocchi no Kento), co-composed with GRP who also handled the arrangement. The track was originally released in 2023 as a self-titled album single, with a music video directed by HONA (zow films). It joined the maimai DX songlist on September 18, 2025 as part of the CiRCLE version's launch lineup, available across Japanese, international, and USA regions. Lyrically, the song uses the metaphor of an "acorn game", a trivial, childish competition, to critique social comparison and pointless conflict. The chorus chant "とっとーいんじゃんほい！" evokes a festival-crowd energy that contrasts with the verses' sharper questions: "レベルアップしない / 君の最適解 / それで満足かい？" (No level up / your optimal solution / are you satisfied with that?). References to はないちもんめ (a traditional Japanese children's game) and 灯台下暗し (the proverb "dark under the lamp post") reinforce the theme of chasing what's out of reach while missing what's right in front of you. On the charting side, the EXPERT chart (level 10, designed by サファ太) is tightly synced to the lyrics, with hold-and-tap patterns mirroring the "レベルアップしない" delivery, sweeping wide-arm holds during each "とっとーいんじゃんほい！" phrase, and a cleverly placed slide sequence under the 灯台下暗し lyric that obscures an incoming note, a literal on-theme charting gag. The MASTER chart (level 13+, constant 13.6, designed by はっぴー) leans heavily into slides with 189 Slide notes out of 608 total, making it a fast, fluid chart that demands precise hand tracking across the screen.