Go back to the beginning and keep on switching.

• [RTFSH] — 1/512: Found by clicking "Switch this Modifier" sixteen times in 2048. [Added in v2.1]

There's a pair that run opposing operations. Hover between them thrice and twice more, and their fates will be swapped.

• [OSTDE] — 839,808 and 145.965: Found by alternating hovering between 3,188,646 and 2216.838 five times each on the menu. (P.S. You can do this again to change them back) (P.P.S. If your device doesn't support hovering, you can do this by alternating entering the two modes then leaving them before starting instead of hovering). [Added in v2.1, random goals were added to 839,808 in v2.2]

Overflow through the menu exactly once for each side of a square, then go to the mode of that number.

• [MTOFS] — Merge Overflow 256: Found by looping through the mode selection pages exactly four times, then selecting 1024. [Added in v2.1]

At the edge of the world, two things must be made non-whole. One of them relates to three, or may be variable.

• [ARFPQ] — Alternate 5040, Partial Absorb 243 and XXXX variants with a rational base: Found by entering a non-whole number into the "Tiles progress through powers of" box in Alternate 5040's Partial Absorb 243 variant or XXXX variant. [PA243 variant added in v2.1, XXXX variant added in v3.0]

Go two steps forward and two steps back, then go back to zero and throw it in the trash!

• [FISTB] — Pair Production Partial Absorb 377: Found by turning on Garbage 0s and selecting Partial Absorb 377. [Added in v2.2. This mode was suggested by Toni Brown.]

There may be an undiscovered type of supermerging...

• [SPMAG] — Arrangement 180: Found by recreating the pattern on the mural in 180's fifth setting in the Custom Grid. [Added in v2.2]

Win by doing nothing. (Entering a save code counts as doing something.)

• [MCSOZ] — Random Unmoving Tiles Each Turn and Random Unmerging Tiles Each Turn (two secret Modifiers): Found by winning a mode without any tiles moving or merging, which is done in Zero-Sides 1. [Random Unmoving Tiles Each Turn added in v2.3, Random Unmerging Tiles Each Turn added in v2.3.1]

Keep cycling through just one answer.

• [OLAMT] — Alternate 5040, mod 27 variant: Found by continually trying to make 1 the only entry of the base cycle in Alternate 5040, then answering the alternator's question when the time is right. [Added in v3.0]

Come here from a tile, without remembering its looks.

• [COZTS] — Tile-Destroying Clicks (a secret Modifier): Click on a tile whose number is 0, while Tile Display Memory Optimization is off. [Added in v3.0]

Make a world where only nothing exists and nothing can happen.

• [VTZMC] — VS The Void Tiler: Make a Custom Mode where the only spawning tiles are 0 and there are no merge rules. [Added in v3.0]

Note: Spoiler codes are sorted alphabetically. Unofficial spoiler codes are commonly used specifically for planning purposes as well as my other ideas.

• [FLPYU] — New modifiers of the existing modes (Bicolor mode merge rule swapping, 1762 mode difference shift modifier, PENGAT as a modifier of TRIGAT for pentagonal numbers, DIVE-3C as a DIVE-3 variant designed for merging between three non-coprime tiles, Easier Four-Sides 625 for eight-directional movements and 3D/4D grids, etc.)

• [KPLCT] — New color spaces (XYZ, LAB, LCH, Oklab, Oklch, etc.)

• [PLMNR] — Color-related fixes (e.g. 3385's inner tile border color fix, text contrast accessibility fix, etc.)