Server overload on Day 1 – too many players log in at once and the servers crash., Critical bugs not caught in QA – progression blockers, crashes, save data loss., Poor device optimization – the game runs well on high-end phones but lags on mid-range devices., Long loading times – players quit before even starting the first session., Update approval delays – hotfix is ready, but App Store / Google Play approval takes too long., Players don’t understand the core mechanics – tutorial is unclear or boring., High Day-1 churn – users install the game but leave after 5–10 minutes., Early difficulty spike – players get frustrated before forming a habit., Too many ads at the start – users feel overwhelmed and uninstall., Poor first-session experience (FTUE) – weak first impression kills retention., In-app purchases don’t convert – players enjoy the game but refuse to spend., Prices feel unfair or confusing – bad pricing strategy kills ARPU., Pay-to-win accusations – damages reputation and long-term trust., Ad revenue is lower than forecast – eCPM is weak in key GEOs., CPI is much higher than expected – user acquisition becomes unprofitable., Creatives don’t perform – ads look good but don’t convert., Wrong audience targeting – users install but don’t like the genre., Organic traffic is lower than predicted – no featuring, weak ASO., Influencer campaigns fail – creators don’t generate installs., Launch burnout – the team is exhausted right after release., Poor launch coordination – marketing, dev, and support teams are misaligned., Customer support overload – thousands of tickets in the first days., Negative early reviews – 1–2 stars on Day 1 damage store ranking., Investor pressure after weak KPIs – retention or revenue below expectations., No content pipeline ready – players finish the game too fast., Cheating and exploits appear – economy breaks within days., Balance issues between free and paying players, Unexpected regional issues – the game fails in key markets (US, Japan, Tier-1)..

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