Buy Chu-Coins for Infinite Lagrange

Buy Chu-Coins for Infinite Lagrange: packs, the Strategic Partnership Agreement and Tech Files

Infinite Lagrange is NetEase Games' sci-fi 4X MMO, the kind of strategy where you build a fleet in a star system, sign alliance agreements and grind months-long campaigns on a single shared map of Proxima Centauri. The global mobile launch landed on 2 June 2021 (after the early EU rollout on 21 April), the Chinese mobile build followed on 18 August 2021, and the proper Steam client arrived in late 2022. As of May 2026 the live build is on the 7 January 2026 patch, the Identity Agreement update is fully in, and Twin Festival remains the headline annual event. Chu-Coins are the premium currency that fuels everything from the Strategic Partnership Agreement to ship liveries.

• 1:1 conversion into Proxima Coins for Tech Files and Black Market packs
• Exclusive ship liveries sold only for Chu-Coins
• Activation of the Strategic Partnership Agreement on the current server
• Seasonal bundles such as the BR050 Blueprint Pack and Exclusive Tech Point Pack
• Ship debut tech files (ten files at 450 Proxima each) during a new ship's release window
• Angulum Cluster Pass for access to the dedicated cluster zone

The triple-currency economy: Chu-Coins, Proxima Coins and UEcoin

Unlike most mobile strategies, Infinite Lagrange runs on three asymmetric currencies. Chu-Coins are bought with real money and are the only way to acquire ship liveries — the cosmetic patterns painted across your fleet, which no in-game grind unlocks. Proxima Coins are obtained by converting Chu-Coins at 1:1, and that conversion is one-way — there is no path back from Proxima to Chu. Proxima is what you actually spend on Tech Files, ship-debut bundles and timed accelerators. The third currency, UEcoin, is server-bound: it cannot be purchased with real money, drops from combat and Trade Center exchanges, and resets when the server closes. Veteran players burn down UEcoin reserves on Weapon Tech Files before phase end, since weapon tech carries between servers but UEcoin never does.

Strategic Partnership Agreement: a per-server pass, not a monthly subscription

The Strategic Partnership Agreement — known in the community as the Lagrange Pass and packaged inside the Dawn Funding programme — runs at roughly $14.99–$15.00 and is structurally very different from a Welkin Moon-style subscription. It is tied not to thirty days but to the lifetime of a specific server: a Phase I server runs for at least 48 days before the ranking phase, after which it funnels through a Hub into Phase II. The pass has 50 levels gated by Activeness Points: +20 for the daily login, +10 for each Action Point spent, +10 per enemy ship destroyed, +20 per quest and +20 per construction. The full paid track includes 6,000 Proxima Coins, 320,000 UEcoin, 20 Black Market Tech Files, 980 Chu-Coins refunded and a Tech File carrying the ST59 Defensive Battlecruiser blueprint at level 50 of Phase I. Buying the pass instantly grants every reward up to your current level. The crucial caveat is that creating a character on a new Phase I server means buying the pass again from scratch — unclaimed rewards from the previous server are gone.

Tech Files and blueprints: why this is not a gacha

Infinite Lagrange is not a gacha title. There is no character banner, no 50/50 split, no pity counter. Ships come from Tech Files — RNG containers carrying blueprints, paid for in Proxima Coins. The base SKUs are 888 Proxima for a triple (three files in a row), 2,660 Proxima for the jumbo nine-file batch, and a daily discounted Tech File at 150 Proxima that is the main F2P pipeline. When a new ship debuts, a special run of ten tech files at 450 Proxima goes on sale with a boosted chance of dropping the new blueprint. Variant ships such as BR050I and BR050II require multiple duplicate blueprints — structurally this echoes eidolons or constellations from gacha titles, but without any guaranteed counter, only through copies of the blueprint. The paid Strategic Partnership Agreement also hands out 20 Black Market Tech Files, which makes the pass one of the strongest fleet-expansion channels for committed players.

Phase I, Hub, Phase II and Angulum Cluster: the server lifecycle

The server architecture deserves attention before the first Chu-Coin purchase. Phase I servers are starter star systems where new commanders spend at least 48 days before the ranking phase. Hub servers are migration nodes: fleets pass through them on the way to Phase II, sign new agreements and pick up the Angulum Cluster Pass. Phase II is the long-running standard server where most alliance wars play out. Angulum Cluster is a separate PvP and trading zone reachable through the Pass or a Trade Permit. The critical fact: a server is bound to a character permanently — there is no progress migration. Playing alongside a friend on a different star system means rolling a brand new character. Before checkout it is worth checking the server number in your Personal Profile twice, since Chu-Coins land on a specific User ID and Server ID and cannot be redirected to another system afterwards.

BR050 Blueprint Pack and Exclusive Tech Point Pack: what is actually inside

The catalogue regularly carries seasonal SKUs such as the BR050 Blueprint Pack and the Exclusive Tech Point Pack, and both deserve a closer look. BR050 is a specific class — the third variant of the standard bomber — with an experimental torpedo launcher built around Trojite Crystals that deals a radiation damage-over-time effect against armour; the original debut window ran 27 December 2023 to 3 January 2024 UTC, and as of May 2026 the pack returns as a rerun rather than a permanent SKU. It is a niche bomber, not a meta flagship. The Exclusive Tech Point Pack is a bundle of Chu-Coins and prepaid Tech Files that NetEase issues through the Trade Center, and its contents shift between servers and phases. The honest move before checkout is to open the in-game Trade Center on your own server and read the description there — a Phase II or Angulum-based server may not see the same offer as a fresh Phase I.

Steam, the official NetEase client and MuMu Player

The PC build is available through three routes, and the choice determines whether mobile progress carries over. The official NetEase PC client from infinitelagrange.com supports cross-save with iOS and Android out of the box. The Steam build (app id 1755920) does not handle that automatically: for the Steam install to pick up a mobile character, you must first launch the mobile client, run Bind Account with an authentication service, and only then sign in through Steam. Launching the Steam client first creates a separate Steam-bound account that cannot be merged with mobile progress later. The third route is MuMu Player, NetEase's own Android emulator, optimised for Lagrange and capable of up to 240 fps through Vulkan — a rare luxury in a genre where most 4X games on PC run on third-party emulators only.

Twin Festival and the 2026 patch cadence

Infinite Lagrange updates on an uneven cycle, usually one or two patches a month for balance, ships and seasonal events, with major drops such as Identity Agreement, Angulum Landing and Twin Festival landing roughly every six months. The Identity Agreement update (late 2024 to early 2025) renamed the Individual Rating Agreement to Explorer Agreement, the Neutral Agreement to Interlocutor Agreement, retuned Cross-system Expedition around Military Prestige and stopped cross-system fleet ships from being destroyed when their sub-base falls. Twin Festival is the headline anniversary event each December, themed around the L001A/L001B bi-directional gates: Festival Commemoration Coins trade for Black Market Tech Files, mail backgrounds and rare liveries. The next Twin Festival is expected from December 2026 into January 2027, and Chu-Coin demand around fleet polish for the event tends to climb in the run-up.

User ID, Server ID and how the order is delivered

Top-up needs two numbers: a User ID (an 8- to 10-digit identifier visible in Personal Profile by tapping the commander avatar in the top-left of the main menu) and the server number (for example, 101 — entered without the "S-" prefix or the word "Server"). No login is needed; Chu-Coins arrive on the bound character regardless of which client signs in next — mobile, Steam build or the official PC client.

1. Open the main menu and tap the commander avatar in the top-left corner.
2. Copy the User ID from Personal Profile and note the server number (such as 101).
3. Pick the SKU you need — Chu-Coins, the Strategic Partnership Agreement, the BR050 Blueprint Pack or the Angulum Cluster Pass.
4. Enter the User ID and Server ID, then double-check both before paying.
5. Complete payment and wait for delivery — Chu-Coins land in the bound commander's wallet.

Related top-ups for 4X strategy fans

• Age of Empires Mobile — a mobile 4X with Apex Coins, Imperial Coins, alliance play and seasonal passes, topped up via the same User ID and Server ID flow.
• Rise of Kingdoms — Lilith Games' classic 4X with premium gems and a per-server VIP pass; Lagrange is often pitched as "Rise of Kingdoms in space".
• Call of Dragons — Farlight Games' fantasy RTS-MMO built on alliances and long server seasons, with the same "server bound to character" rule.
• State of Survival — FunPlus' post-apocalyptic strategy with a server-bound economy and Battle Pass structure, topped up by player ID and server.

The Brawl Games catalogue lists Chu-Coin denominations from 60 to 6,480 plus the larger 12,980 / 32,980 / 64,980 packs, the Strategic Partnership Agreement for the current server and seasonal bundles such as the BR050 Blueprint Pack — seasonal contents are detailed on each product page because they shift between server phases. Checkout requires only the User ID and the server number; payment is accepted from regions where the official store has limited card support. The on-site chat is available for questions about a specific pack or order status.