Final Fantasy X / X-2 - Walkthrough Part 27 – Final Battle with Sin

A complete walkthrough for Final Battle with Sin in Final Fantasy X (FFX), including enemies encountered, obtainable items, and boss strategy guides.

Final Battle with Sin


Final Fantasy X - Tidus IconTidus Final Fantasy X - Tidus IconYuna
Final Fantasy X - Wakka IconWakka Final Fantasy X - Lulu IconLulu
Final Fantasy X - Kimahri IconKimahri Final Fantasy X - Auron IconAuron
Final Fantasy X - Rikku IconRikku

Obtainable Items

Item Location
Mega-Potion Steal from Left Fin (common)
Supreme Gem Steal from Left Fin (rare)
HP Sphere After defeating Left Fin (common)
HP Sphere (x2) After defeating Left Fin (rare)
X-Potion Steal from Right Fin (common)
Shining Gem Steal from Right Fin (rare)
Lv. 3 Key Sphere After defeating Right Fin (common)
Lv. 3 Key Sphere (x2) After defeating Right Fin (rare)
Star Curtain Steal from Sinspawn Genais (common)
Shining Gem Steal from Sinspawn Genais  (rare)
Return Sphere After defeating Sinspawn Genais (common)
Return Sphere (x2) After defeating Sinspawn Genais (rare)
Stamina Spring (x3) Steal from Sin (Core) (common)
Stamina Spring (x4) Steal from Sin (Core) (rare)
MP Sphere After defeating Sin (Core) (common)
MP Sphere (x2) After defeating Sin (Core) (rare)
Ether Steal from Sin (Overdrive) (common)
Supreme Gem Steal from Sin (Overdrive) (rare)
Lv. 3 Key Sphere After defeating Sin (Overdrive)

Area: Bridge

1 Watch the cutscene.
2 Speak to everyone.
3 Optional: Purchase Remedy from Rin.
4 Talk to Yuna.
5 Watch the cutscene.

Area: Cabin

1 Talk to Cid.
2 Select Highbridge as your destination.

Area: Highbridge

1 Walk to the guards.
2 Watch the cutscenes.
3 Converse with the purple hooded child.
4 Select “I think so.”
5 Choose “Defeat Yu Yevon!”
6 Watch the cutscenes.
7 Talk to everyone on the bridge.

Area: Sin

1 Select “Sin” on the map.
2 Return to the airship cabin.
3 Take the lift up.
4 Exit to reach the airship’s exterior.
5 Watch the cutscene.
6 Defeat Left Fin.
7 Defeat Right Fin.
8 Defeat Sinspawn Genais.
9 Optional: Restock your items.
10 Return to the lift and exit the airship interior.
11 Talk to Yuna.
12 Watch the cutscene.
13 Retun to the airship and go to the exterior deck.
14 Defeat Overdrive Sin.

Area: Near the Airship

1 Watch the cutscene.
2 Record your progress with the Save Sphere.
3 Optional: Finish Side Quests.


1) Side Quests

You can start doing Sidequests before you proceed with the rest of the walkthrough.

When you finish them, proceed to the next location by talking to Cid and select “Sin” as the next destination.

2) Boss: Left Fin and Right Fin

Sin’s Left Fin Boss Guide

A good team is Tidus, Lulu, and Yuna. Have Tidus cast Hastega for a turn advantage. Next, have Yuna cast Shell. Lulu can make up for lack of offense by Doublecasting Flare or Ultima.

If you don’t have these, you can opt to summon Aeons instead. You can maneuver the ship to control your position in the fight. Have the ship approach the boss, then have Auron cast Armor Break and focus all your physical attacks on its fin with Tidus, Rikku, and Kimahri. After each has attacked, move the ship farther away to lessen the fin’s damage. Since both fins behave the same way, you can use the same tactic as before. Make sure to keep Haste/Hastega buffs active, and save your overdrives.

Sin’s Right Fin Boss Guide

3) Boss: Sinspawn Genais

Sinspawn Genais & Sin’s Core Boss Guide

Do not use your overdrives just yet. Sinspawn soaks up magic if you target Sin, so you need to take it out first. Cast Slow and Silence on Genais. With Genais, out of the way, you can channel your attacks on its weakness. Have Auron use Armor Break and follow with physical attacks. Another way is to use Rikku or Kimahri as your third member. Similar to the previous battle, Lulu should Doublecast Flare or Ultima. Then, Yuna follows up with Holy. The third member will then copy Holy. Rikku, in particular, can double as a support with Al Bhed Potions to lift status ailments.

5) Boss: Overdrive Sin

Overdrive Sin Boss Guide

You still have ample time to rest and switch gear before this fight. Equip gear with immunity to petrification with traits like “Stoneproof,” and customized equipment with “Confuseproof” or “Zombieproof.” Gears with Ward are good alternatives but they only trigger randomly. You should also buff your party’s Agility and Strength before you challenge this boss.

Again, Tidus, Yuna, and Lulu work best. When the fight begins, have Tidus cast Hastega, have Lulu follow up by Doublecasting Flare or Ultima, and have Yuna cast Holy. Tidus can then support by removing any ailments should one of the members become affected.

Swap in Wakka and have him use his Aurochs Reels Overdrive. Kimahri can then use Fire Breath. Have Rikku perform Spare Change and use 100,000 gil for some massive damage. When the fight nears a close, have Tidus, Auron, and Rikku unleash their overdrives. Should you anticipate an overdrive about to come out, have Yuna back on the frontlines and intercept it with an Aeon.

← Zanarkand Ruins Inside Sin →

Other Walkthroughs

▼Final Fantasy X Walkthroughs
Zanarkand Submerged Ruins Besaid Island
Besaid Village S.S. Liki Kilika
S.S. Winno Luca Mi’ihen Highroad
Mushroom Rock Djose Highroad and Temple Moonflow
Guadosalam Thunderplains Macalania Woods
Macalania Lake and Temple Sanubia Dessert Al Bhed
Fahrenheit Airship Bevelle Via Purifico
Return to Macalania Woods Calm Lands Mt. Gagazet
Mt. Gagazet Cave Zanarkand Ruins Final Battle with Sin
Inside Sin - -

Final Fantasy X / X-2 Recommended Article List

▼Final Fantasy X Recommended Articles
Walkthroughs Characters Useful Guides
Boss Guides Game Database Trophies/Achievements
▼Final Fantasy X-2 Recommended Articles
Walkthroughs Characters Useful Guides
Boss Guides Game Database Trophies/Achievements

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