Color-coded beam zones with a hidden x4 Amount multiplier. Ignores Speed and Duration.
Phas3r multiplies Amount by four behind the scenes, which is the single fact that reshapes every passive-priority call. The wiki effects block specifies the multiplier in plain language: "Amount is multiplied by 4 for this weapon." Every +1 Amount from Duplicator becomes +4 beams in the sequence, and Phas3r already runs the highest Amount-scaling profile in the base game.
The second buried mechanic is the Ignores Speed and Duration tag. According to the wiki, Phas3r ignores both stats entirely, so Bracer's Projectile Speed and Spellbinder's Duration go to zero on this weapon. Cooldown reduction is the only timing stat that matters here, which makes Empty Tome a double-duty pick.
Build context. Phas3r is Space Dude's base game starting weapon, unlocked by leveling Phas3r to 7 in any run. The evolution into Photonstorm gates on a max-level Empty Tome, which is convenient because Empty Tome's Cooldown component is exactly what Phas3r wants anyway.
This guide covers the Amount-times-four mechanic, the Photonstorm evolution that gates on Empty Tome, the Ignores Speed and Duration trap that wastes Bracer and Spellbinder picks, the best Space Dude build, and the in-game Donna Summer reference baked into every shot.
Phas3r, Space Dude's base game starter that paints horizontal beam zones around enemies. Amount is multiplied by 4.
Photonstorm at max level with a max-level 
Empty Tome.
Duplicator, 
Spinach, and 
Candelabrador. Skip every Speed and Duration passive.Phas3r fires a sequence of horizontal beams centered on the nearest enemy on a 5-second base Cooldown. The wiki effects block describes the color cycle in order: red, yellow, blue, magenta, with orange replacing red after the opening burst. The red beam targets enemies at longer range and fires the largest burst of the sequence; the remaining colors split the leftover Amount and trickle out at the 0.1-second Projectile Interval.
Damage starts at 5 and scales with Might. Per the wiki, Phas3r ignores Speed and Duration entirely, so any Projectile Speed source (Bracer) and any Duration source (Spellbinder, Empty Tome's Duration component, Twilight Requiem) does nothing on the beam side. Cooldown reduction is the only timing modifier that registers.
Area only scales the beams horizontally per the wiki. Vertical thickness is fixed, which is why max-level Phas3r covers a long strip rather than a fat rectangle. Every shot plays one note of a melody, and the fire rate increases with level so the tune becomes recognizable by level 6.
Take Duplicator on the first level-up screen you can. Every +1 Amount feeds into the Amount-times-four multiplier, so one Duplicator pick scales like four on a normal weapon. The wiki Tips section calls this out: Phas3r is one of the best weapons in the game specifically because Amount scaling is uncapped and Limit Break adds another +30 Amount on top.
| Stat | Base | Max (Level 8) |
|---|---|---|
| Base damage | 5 | 15 (+10) |
| Area | 100% | 250% (+150%) |
| Amount | 1 (x4 internal) | 5 (+4) |
| Cooldown | 5.0s | 5.0s |
| Projectile Interval | 0.1s | shorter per level |
| Speed | N/A | N/A |
| Knockback | 1 | 1 |
| Pool Limit | 200 | 200 |
| Rarity | 50 | 50 |
| Property | Value |
|---|---|
| Type | Normal (base game) |
| Effects | Ignores Speed and Duration |
| Blocked by walls | No |
| Starting weapon for | Space Dude |
| Unlock | Level Phas3r to 7 in any run |
| Evolves with | Empty Tome (max level) |
| ID | PHASER |
Limit Break adds Might +0.3% per pick (rarity 10), Area +2% to a 400% cap (rarity 10), and Amount +1 to a 30-pick cap (rarity 1). The Amount line is the standout: per the wiki, Phas3r already multiplies Amount by 4 internally, so the Limit Break Amount caps out as 30 extra beams stacked onto whatever Duplicator and level-up Amount already added. In actual play, that scaling is what carries the weapon past hyper Inverse on Space 54.
Phas3r evolves into Photonstorm at max level with a max-level Empty Tome in the inventory at minute 11 or later. The wiki specifies Empty Tome as the single passive gate, which is convenient because Empty Tome's Cooldown component is the only timing stat Phas3r actually benefits from. The Duration half of Empty Tome is wasted, but the Cooldown half pays for the slot twice over.
Photonstorm retains the horizontal beam pattern with a denser color spread and a more apparent melody loop. According to the wiki, the trivia section notes that Photonstorm uses a similar synth to Donna Summer's "I Feel Love," which Phas3r plays note-by-note in its base form. The evolution unlocks no character chain, but the EXTRA: Photonstorm achievement fires the moment the evolution proc completes.
| Base | Passive needed | Becomes |
|---|---|---|
| Phas3r (max level) | Empty Tome (max level) | Photonstorm |
Run Empty Tome as the second passive after Duplicator. The Cooldown component shortens every Phas3r beam sequence, and at max Empty Tome the evolution gate is already satisfied. Open any chest after minute 11 with both pieces at max to trigger Photonstorm. Skipping Empty Tome for a Cooldown-heavy alternative is the most common way to brick the evolution.
Space Dude's base game kit pairs the Phas3r starter with no special passive bonuses, so the build leans purely into Amount and Cooldown. The wiki combo table flags Spinach, Empty Tome, Candelabrador, and Duplicator as the green-check picks. In our testing, swapping any of those four for a Speed or Duration passive is a net damage loss on the Phas3r side.
Space Dude (default Phas3r starter, no passive gimmick, pure damage scaling)Empty Tome (Cooldown half is the only timing stat Phas3r respects; doubles as evolution gate)Spinach (Might scales base damage from 15 to whatever the run can climb)Candelabrador (Area widens beams horizontally; each +Area tick adds reach on the red opener)
Hollow Heart (defensive layer for Space Dude, who has no kit defense)
Stone Mask (Greed for Limit Break gold; Phas3r post-evolution can use Amount Limit Breaks)Across multiple runs, this build is online around minute 8 once Duplicator hits 2 and Empty Tome reaches level 5. Past minute 18, Photonstorm with two Duplicator stacks and a Limit Break +Amount stream covers the entire horizontal strip of the arena, which is enough for hyper Inverse on most stages.
The wiki combo table flags Spinach, Empty Tome, Candelabrador, and Duplicator as the four green-check passives for Phas3r. Hollow Heart and Clover sit behind a Randomazzo-arcana condition rather than working unconditionally, while Bracer, Spellbinder, Pummarola, Wings, and Crown all show red Xs. The Ignores Speed and Duration tag explains most of those exclusions directly.
For arcana picks, Game Killer (0) is the standout on the Phas3r combo table. The wiki notes that Game Killer disables enemy projectiles for its duration, which lets Phas3r's horizontal beam sweep work uninterrupted at close range. Gemini (I) pairs cleanly when running multiple Amount-scaling weapons because the +Amount stacks reroute through every beam-style weapon at once.
In real runs, Phas3r pairs cleanly with any second weapon that also benefits from Amount. Magic Wand and Cross are the obvious co-stars, since both gain meaningful damage from every Duplicator pick. Skull O'Maniac's Curse can also help, since denser enemy waves give Phas3r's horizontal beams more targets to land on per sequence.
Phas3r and Magic Wand both scale heavily on Amount, but they fight different battles. Per the wiki, Phas3r multiplies Amount by 4 internally and ignores Speed and Duration, while Magic Wand respects both stats and fires at the nearest enemy on a faster Cooldown. Magic Wand is the better target-priority weapon early; Phas3r is the better screen-wipe weapon once Empty Tome and Duplicator are online.
Pick Phas3r when the run can support Empty Tome at max for the Photonstorm gate and Duplicator stacks are reachable by minute 10. Pick Magic Wand when the run leans on Bracer or Tirajisu for other weapons, since Phas3r will ignore both of those stats anyway. In practice, most experienced Space Dude runs aim for Phas3r evolved plus a secondary Magic Wand on Duplicator coverage.
Per the wiki Trivia section, Phas3r's name is a leetspeak reference to the Phaser game framework. Vampire Survivors itself was built on Phaser until version 1.6. The evolution Photonstorm takes its name from the pseudonym of the Phaser engine's creator, which makes the Phas3r-to-Photonstorm chain a direct nod to the engine that shipped the original game.
The melody Phas3r plays note-by-note as it fires is the backing track to Donna Summer's "I Feel Love," with the riff originally composed by Giorgio Moroder. The wiki notes that the attack sequence ends before the next sequence starts, so the song can never play continuously in a real run. Photonstorm switches to a fuller synth that matches the actual record more closely. The beams themselves are identical to Luminaire from the Tides of the Foscari DLC, except rotated horizontal.
Explore the Amount-scaling neighbors, the passive items that gate Phas3r's evolution, and the broader Space Dude run roster.
Game data and screenshots adapted from vampire.survivors.wiki, used under CC BY-NC-SA 3.0. Original content remains the property of the wiki contributors and Poncle.