01Who may use the Game; beta notice

If you are under 18 (or the age of majority where you live), please read these Terms with a parent or guardian and use the Game and make purchases only with their consent.

The Game is currently in beta. Features, numbers and rules may change, and bugs, data loss or service interruptions may occur. Whether beta progress and items carry over to the full release will be announced before launch.

02Operator

During the beta, the Game is operated by Chongqing Hongchuangda Technology Co., Ltd. under the Tanghatoya brand (“we”). Contact: [email protected].

03No account; local data

The Game does not require an account. Your progress, Crystals and items are stored on your device; your leaderboard identity is a player ID generated randomly on your device.

• Please take care of your device. Until the transfer code feature is released, uninstalling, clearing data or switching devices will lose local progress, and we cannot restore it for you.
• Non-consumable items bought through the App Store / Google Play (Tower Ascension) can be recovered with “Restore purchases” in the Game.

04Virtual currency and items

4.1 Types

• Crystals: a consumable virtual currency used to recruit heroes, exchange for in-battle Power (1 Crystal = 10 Power), and more.
• Monthly Pass: a consumable item. You receive 300 Crystals immediately; then, for 30 days, the first time each day you reach the main menu, a daily supply (90 Crystals + 10 Ascension Cores) is delivered to your mailbox for you to claim. Days on which you do not open the Game are not made up. Passes can be stacked up to a maximum of 180 remaining days.
• Tower Ascension: non-consumable items that permanently raise the level cap of the corresponding tower or generator.
• Ascension Cores, heroes, equipment and other content earned through play.

4.2 Nature

You receive a limited, non-transferable licence to use this content in the Game, not ownership. Virtual currency and items have no cash value, cannot be exchanged for money or legal tender, and cannot be transferred, sold or traded between players. We do not offer or recognise any off-platform trading.

4.3 No expiry

Crystals do not expire.

4.4 Prices, purchases and refunds

Prices are as shown in the store (based on your store account’s region). Purchases and refunds are handled by the App Store / Google Play under their rules; please request refunds from the relevant platform. When a platform refund is granted, we may remove the corresponding currency or items.

4.5 Random content

Probabilities for random content such as hero recruitment and equipment rolls are published on the Drop Rates page and in the relevant screens of the Game.

4.6 Updates and compensation

We try to keep old saves playable in new versions. If a save cannot be continued after an update, you can reclaim the Crystals you exchanged for Power in that run (once per run) on the save screen before deleting the save.

05Leaderboard and season rewards

5.1 Eligibility

The leaderboard ranks single-player Endless mode on campaign maps M1–M4 (the M0 tutorial and co-op maps do not count). There are two boards:

• Ranked: runs in which no tower went above level 7, no generator went above level 4, and no Crystals were exchanged for Power. Any hero at any level is allowed. Season rewards are based on the Ranked board only.
• Open: all valid runs, for display only. Ranked results also count on the Open board.

5.2 Ranking

Map boards compare, in order: Endless waves completed (more is better) → battle time (less is better) → remaining base HP (more is better) → submission time (earlier is better). The Overall board sums each map’s best waves multiplied by a map coefficient; all coefficients are 1.0 by default and any change will be announced in advance.

5.3 Verification

We verify results by replaying the full action log of the run. Unverified results are shown as usual and marked “pending”; season rewards go only to verified results. A player whose result on any map fails verification (for example, the replay does not match the submitted score) is removed from every map board and the Overall board of that board set, and everyone below moves up. A removed result can return once it is replaced by a new valid result.

5.4 Rewards

Each season’s rewards and deadline are published in the Game under “Season Info”. Season S1 is based on the Ranked Overall board and closes at 24:00 on 2026-12-31 (UTC+8). Rewards are delivered through the in-game mailbox after verification; titles cannot be sold or transferred.

5.5 Rule changes

For fairness or to fix problems, we may change leaderboard rules, map coefficients or how rewards are delivered, and will announce changes in the Game or on this website. Changes will not reduce rewards for a season that has already closed and published its results.

5.6 Nicknames

Nicknames are 2–12 characters and must not contain insults or hate, or impersonate staff or other people. Your first nickname is free; after that you can change it once per season. We may reset nicknames that break these rules to the default name.

06Cheating and enforcement

The following are prohibited:

• modifying, cracking or decompiling the client, or using cheats, speed hacks or automation to gain an advantage;
• tampering with saves, memory, network traffic or action logs;
• exploiting bugs to gain scores or items without reporting them;
• using multiple identities to manipulate rankings, or playing on someone else’s behalf to rank;
• attacking, disrupting or abusing our servers;
• impersonating staff, or insulting or harassing other players;
• selling, buying or trading virtual currency, items or game data.

Depending on severity, we may issue a warning, reset your nickname, remove results, cancel or reclaim rewards, or block access to the leaderboard and mailbox. If you disagree with a decision, email [email protected] within 30 days of receiving it.

Please tell us about bugs you find. Good-faith reports that did not profit from the bug will not be penalised.

07Co-op (test feature)

During the beta, co-op is a test feature and may experience desyncs or disconnections. Co-op matches do not count toward the leaderboard.

08Intellectual property and AI

The Game is made entirely with AI: code, art, music, sound and text were generated with AI tools and selected, edited and approved by the developer. Rights in the Game’s content belong to us or the respective rights holders as provided by law; third-party components are used under their licences, listed on the Licenses page. Do not copy, distribute, modify or commercially exploit the Game without permission.

By setting a nickname you allow us to display it in the Game, such as on leaderboards and in mail.

09Changes, suspension and termination of service

We may update, change or retire features. If we decide to stop operating the Game (including ending the beta without moving to a full release), we will announce it in the Game and on this website at least 30 days in advance and stop selling virtual currency from the date of the announcement. Unused paid virtual currency will be handled in accordance with applicable law, including refunds where the law requires them.

10Disclaimers and limitation of liability

During the beta the Game is provided “as is”. To the extent permitted by law, we do not guarantee uninterrupted or error-free service and are not liable for losses caused by networks, devices, force majeure or third parties; our total liability to you is limited to the amount you actually paid for the Game in the preceding 12 months.

Nothing in this section excludes or limits liability that cannot be excluded by law (such as for damage caused by our intent or gross negligence), or affects your rights as a consumer under the law where you live.

11About Apple

If you obtained the Game from the Apple App Store: these Terms are between you and us, not Apple, and we — not Apple — are responsible for the Game and its content, maintenance and support. If the Game fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price of the Game (if any) under its rules; to the maximum extent permitted by law, Apple has no other warranty obligation. We, not Apple, are responsible for addressing any claims relating to the Game, including product liability, legal or regulatory compliance, consumer protection and intellectual property infringement claims. Apple and its subsidiaries are third-party beneficiaries of these Terms and, once you accept them, may enforce them against you. You confirm that you are not located in a country subject to a US Government embargo and are not on any US Government list of prohibited or restricted parties.

12Governing law and disputes

These Terms are governed by the laws of the People’s Republic of China, excluding its conflict-of-laws rules. Disputes shall first be resolved through friendly negotiation; failing that, they shall be submitted to the competent people’s court where the operator is domiciled.

If you are a consumer, nothing in this section affects the protection given to you by the mandatory laws of your country or region, and you may also bring proceedings in a court permitted by your local law.

13Changes and contact

We may amend these Terms. We will update the “Last updated” date on this page and give advance notice of significant changes through an in-game notice or the mailbox. If you continue to use the Game after changes take effect, you accept the amended Terms.

Questions: [email protected].