Rebirth Wall
Tap to spawn heroes on a shrinking wall, watch them auto-fight endless waves, then rebirth them all for permanent medals.
Tap to drop a hero on the wall, they auto-attack the next wave; die or hold to trigger rebirth, granting a medal that permanently boosts future heroes.
One thumb: tap empty wall tiles to spawn a hero, hold the rebirth sigil to prestige and reset the run.
Idle defense + rebirth medal loop, lifted directly from Endless Frontier 2's '転生' and '勲章' systems.
エンドレスフロンティア2 is the #6 top free app in Japan with a 4.5 rating, showing strong active demand for rebirth-loop idle defense games.
Tap-to-spawn heroes, auto-fight waves, rebirth for permanent medals is verbatim the Endless Frontier 2 loop (転生 + 勲章 + 英雄召喚 + ウェーブ), so the hook is proven but zero novelty.EF2 official description lists 転生 (rebirth), 勲章 (medals for permanent boost), 英雄召喚 (hero summoning), endless waves - identical to Rebirth Wall mechanics. ↗
Idle defense with rebirth loop is a watch-and-wait genre with weak shareable moments; EF2 sits at #15 free (not the claimed #6) with only 44 ratings, indicating limited breakout energy.EF2 current rank: free popular 15位, rating 4.52 from only 44 reviews - far from a viral hit. ↗Single-thumb idle defense loop rarely produces the fail-moments that drive TikTok/Reels shares. ↗
Tap empty tile + hold to rebirth is genuinely one-thumb and trivially prototypable; idle/auto-attack removes per-frame input demands.EF2 description shows the same minimalist tap + auto-battle UX already shipping. ↗
Proven idle monetization stack: rewarded video for 2x speed, gems-as-currency gating, IAP packs, seasonal ranking leagues - EF2 documents all of these.EF2 official text explicitly names 倍速システム 広告や宝石 (speed-up via ads/gems), IAP, ranking leagues, dungeons - replicable ad + IAP model. ↗Google Play page confirms hybrid free-to-play with in-app purchases for the same loop. ↗
Rebirth Wall is not adjacent to EF2 - it is the same game. ekkorr already ships the exact tap-to-spawn / wall defense / rebirth / medal system at scale; no differentiated angle surfaced in the pitch.EF2 live on App Store with identical wall/hero/rebirth/medal vocabulary - direct mechanic overlap, not whitespace. ↗efkorr-published incumbent already owns the niche Rebirth Wall would target. ↗