Pick a version, get its client, run the server for it. The setup is identical whichever you pick: same archive layout, same config file, same launcher. What differs is the content below.
Every one of these is our own server code. The content is the version's; the formulas, the balance and the drop rates are ours. So this is a choice about which game you want to play rather than about which is the most faithful reproduction.
At a Glance
| Giga 4 Pt2 | 2.1.5 | 2.1.6 | 2.2.3.2 | 4.15 | |
|---|---|---|---|---|---|
| Level cap | 55 | 55 | 55 | 65 | 80 |
| Late-game maps | Novus core | + Beast Mountain, Outcast Land | + Kartella Bio Lab | + Bio Lab 2nd Basement | + Novajan, Caravan, Jetso Island |
| Race units | MAU, Siege Kit | + Red MAU, Red Siege Kit | + Blue MAU, Blue Siege Kit | full line | + High Gold MAU, new Siege Kit, Animus 71 |
| Endgame dungeon | Hora Darkhole | Dark Hall | Dark Hall | three Battle Dungeons | not confirmed |
| Headline system | Chip war, Archon | Archon powers, guild reform | PvP points, Superior armour | Gold Points | Quest markers, auto-tab targeting |
1.5 and 4.55 are not in that table. 1.5 is a rework rather than a step in the same line, and 4.55 builds on 4.15's world rather than replacing it. Their own sections say what each one adds.
If You Only Want to Play
We are not running a public RF server at the moment, so every version on this page is one you host yourself.
The Versions
Giga 4 Part 2
The last version before the cash shop. Three races at war over one mine: Bellato mechs, Cora magic and Accretia gunmetal, with the chip war on a timer and an elected Archon running each race. Level cap 55.
2.1.5, Red Army
Adds Beast Mountain (level 49+) and Outcast Land (51+), the Dark Hall dungeon with its level 50 relic and Leon weapons, and the race-exclusive Red MAU, Red ISIS and Red Siege Kit at the cap.
The bigger change is political. The Archon gains real authority over a race: tax collection, deputies, a council, and the ability to call a nuclear strike. Guilds were reformed at the same time, with the member ceiling cut from 150 to 50 and honour badges added.
2.1.6, Secret of Holystone
Red Army's direct successor. Adds the Blue MAU and Blue Siege Kit alongside the Red line, Kartella Bio Lab as a third late zone, and the Superior armour line built by converting HolyStone into Crystal Talic. Animus summons reach level 55 under new summoning rules.
It also adds a PvP point system with temporary and permanent points, a last-hitter bonus in the chip war worth 30% attack and defence, and a quest journal that holds 20 quests at once.
2.2.3.2, Golden Age
The version most people mean by RF Online, and the largest content set here. Level cap 65, with the Bio Lab second basement opening at 61 through Cartella Gate.
Its headline system is Gold Points: a currency earned from hunting and from Gold Boxes during the chip war, spent at faction NPCs on high-tier weapons, accessories and armour coupons. It adds three Battle Dungeons across levels 45 to 65, and new warrior and ranger skills at 40+.
This is the one we work on first.
4.15, Age of Patron
Not an episode. Age of Patron was a single update rolled out across every RF Online service after 2.2.3.2, so the same patch landed on the Korean, Indonesian, Philippine, Thai, American, European, Taiwanese and Japanese versions rather than forking a new line. That is why its level cap depends on where you played it: 80 on most services, 70 on the Indonesian remaster. Ours is an 80.
What it added:
- Four maps. Novajan, Caravan, Jetso Island and the Elite Training School.
- New race units. The High Gold MAU, another Siege Kit, and the Animus at level 71.
- Daily quests, and the item tier that comes with fifteen more levels of cap.
- The quality-of-life pass it is remembered for. Auto-tab targeting, quest markers over whatever the quest wants, and tooltips on your target. Age of Patron is the first RF Online that tells you where to go.
The client we built against is the RedFox build: the American service on that list, and the last 4.15 ever released.
4.55, Dragonborn
The last RF Online there was. Dragonborn rolled out from 2022 on the services still running, and only Taiwan carried it to the end: level 80, a second endgame gear tier and a new battleground in its final year, until the last official RF Online server closed on 31 December 2025.
What it added:
- Infernal Dragonborn gear. Upgraded level 75 Rare-D items awaken into the Rare-M tier, for weapons, armour, shields, cloaks and accessories.
- Absolute Zero gear. A Mythic tier above that for level 80, with a weapon awakening stage.
- Mounts. A mount slot above the amulet, with jet skis, a rocket sled, the chicken car and the fish carts.
- Item collections. Register items into a codex shared by every character on the account, and each completed set grants a permanent stat bonus.
- New places. The Infernal Dragon Tower, entered from Volcanic Cauldron, and the Sky Battleground, a three-race map whose pit bosses are the hardest in the game.
- Level 75 guard towers and traps, and a balance pass for all three races, the Bellato MAU most of all.
The client we built against is the final Taiwan build, from July 2025. The official servers are gone, so there is no original left to compare ours with; our item content is read out of that client, and the rest of the world is 4.15's.
1.5
A relaunch. Despite the lower number, 1.5 arrived in 2011, after 2.2.3.2, with a rebuilt interface and whole systems the numbered versions never had. It ran for a few years, was published in English by GamesCampus, and was shut down.
The server is among the least proven of the set, and it speaks to one client: the GamesCampus 1.5b build. Pick it because that client is what you have, or because the version interests you.