To that end, the following properties of cumulative infinite research prices may be useful: We denote by N the current level of the research, by F the final non-infinite level of the research (hence F+1 is the first "infinite" level) and by P the price of the research at level N.Īs the price of most infinite technologies (specifically, those based on geometric progressions) increases very steeply, it may be a good idea for players to set realistic target levels for each of the infinite technologies they wish to pursue, and make their factory plans accordingly. The table below summarizes for all infinite researches their first infinite level, the cost of the first infinite level, the cost formula and the per-level bonus. Two technologies - mining productivity and follower robot count - use an arithmetic progression instead. The price of all infinite technologies is generated in a mathematical progression for the majority of technologies, the progression is geometric, mostly in powers of 2. In either case, once the first infinite level is researched, the card label switches to the one discussed above. Only the two artillery-related technologies (artillery shell range and shooting speed) are infinite-only for these, 1 - ∞ is shown before any levels in them are researched. Most infinite technologies are continuations of ordinary multi-level technologies the "infinite" mechanic becomes effective once the player reaches the card initially labeled with N - ∞ in the research tree. Infinite technologies are identified in-game by a small ∞ infinity symbol shown in the top right corner of the research technology's card in the research screen. As such, they are late-game technologies intended primarily for players who wish to continue playing and expand their factory past the nominal victory condition of launching a rocket. They are subject to diminishing returns thus, the per-level and per-science pack contributions from very high levels of infinite technologies will eventually provide only marginal improvements.Īll infinite technologies levels require space science packs, and are also the only technologies that do. The per-level bonuses are constant for a particular infinite technologies and, like finite research bonuses, are additive within a single technology. All of them unlock bonuses to existing technologies, never new structures or abilities. While most technologies in Factorio are either one-off or have a finite, relatively small number of levels available, a few are "infinite", meaning the player can research as many levels as they can afford.
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