Coupons, Funds, Gems: The Chain
The top-up guides draw the chain: coupons are bought with money (1 USD = 7 coupons on SEAGM’s page), coupons convert to funds at 1:1, and funds exchange into gems, which buy stamina refills, summon vouchers, arena resets and packs. Gems are the spendable end of the chain — the currency whose farming this guide covers.
Free play enters the chain at the gem end: BitTopup’s currency table lists gems as exchanged from funds or earned from daily quests, spent on vitality refills, normal summon vouchers and arena resets. You cannot farm coupons; you farm gems and the things gems buy.
Daily Quests, Events and Login Rewards
Daily quests are the gem base: the beginner’s guide notes daily missions as the main ongoing EXP and reward source, completable in 30 minutes to an hour, alongside friend stamina exchanges (one stamina per friend, up to fifty) and a daily lucky bag from the mall. Login bonuses, gift codes, return packs, friend invites and time-limited carnivals add gems, coins and vouchers on top, per the game’s store description.
Events are the spike: the same description lists frequent vouchers and event rewards, and the beginner’s guide notes play-time rewards at 5, 10, 15, 20, 30, 60, 90 and 120 minutes each day. Play the day’s content, collect every timed reward, and the gem balance grows without a dedicated grind.
Spending: Black Tickets First
The beginner’s guide’s spending rule is the one to follow: save gems for event tickets, above all black tickets for limited recruitment, and do not waste them speeding things up. Black tickets are the route to the game’s most powerful units, and the guide advises saving for 10-ticket pulls, which guarantee an SR or above, rather than pulling one at a time.
Stamina is the second gem use, and it is a good one in moderation: gems spent on stamina buy more sweeps, faster leveling and more rewards, per the guide. The line is between stamina that unlocks content and stamina that merely hurries it — the first is investment, the second is the leak.
Teams and Gear: Where Gems Pay Off
Gems pay off in team power, not in the gem balance itself: the game builds squads from heroes and monsters across four classes — Warrior, Fighter, Tech and Psychic — with cores, gear and awakenings changing what a team can clear. Club boss challenges, club vaults and gear shops are the guide’s named gear routes, and purple gear unlocks at level 66.
Save for the limited banner, build around the core your pulls support, and let gear come from the content your team can already clear. A gem spent on a banner that completes a core beats a gem spent on stamina for content you cannot yet use.
Buying Gems Instead
Coupons are sold by User ID and server ID (UID and SID), per SEAGM and BitTopup: enter both exactly, since accounts on different server zones are independent databases and a wrong zone delivers to the wrong character. A top-up asking for your login is not a UID delivery; see our top-up guide. The market record is on the One Punch Man page.
Frequently Asked Questions
What are gems in One Punch Man: The Strongest (SEA)?
The spendable currency at the end of the coupons → funds → gems chain. Gems buy stamina refills, summon vouchers, arena resets and packs, and are also earned from daily quests.
How do you farm gems in One Punch Man: The Strongest?
Daily quests, login bonuses, gift codes, events and play-time rewards, plus friend stamina exchanges. The game’s store description lists frequent vouchers and login rewards as gem sources.
What should you save gems for?
Black tickets for limited recruitment, per the beginner’s guide — pulled in tens for the SR-or-above guarantee, not one at a time, and not spent on speeding things up.
Sources
Checked October 26, 2026. Game systems change with patches, so confirm numbers in game.
