Despite its quirky name, Saeko: Giantess Dating Sim is no casual romance. This twisted visual novel blends horror, survival, and psychological tension as you — Rin — try to stay alive as one of six thumb-sized captives trapped in Saeko’s desk drawer.
In this guide, we cover every survival mechanic, ending route, and speedrun strategy available in Patch 1.2.5+, including all new CGs, “Midnight Date” content, and secret lore unlocks.
📋 Table of Contents
- Act I: Controls & Interface Tips
- Act II: Day Cycle – Feeding & Sacrifices
- Act III: Core Stats – Health & Appeal
- Act IV: Night Cycle – Timed Dialogue Prompts
- Act V: Midnight – Saeko’s Phone & Lore Minigame
- Act VI: All Three Endings Explained
- Act VII: Advanced Strategies & Speedrun Tactics
- Act VIII: Save-Game Safety & Pitfalls
- Act IX: Final Summary & Resources
🎮 Act I: Controls & UI Basics
- Click to Advance Text, hold “Skip” to fast-forward read lines.
- Gear Icon: Access Save/Load, Settings, and CG Gallery.
- Settings > Display: Customize text speed, font size, and accessibility.
- Quick Save: Essential before every key decision or Night event.
Pro Tip: Use all manual quick save slots wisely. Rotate them across major days/nights to prevent route lockout.
🌞 Act II: Day Cycle – Feeding & Sacrifice System
Each day, Saeko returns demanding lunch. You must choose which captive to feed — or sacrifice.
- Every captive has two stats: Health (green) and Appeal (pink).
- You get one food item (peanut, candy, fish, etc.) per day.
- Feeding boosts Appeal — which determines who Saeko chooses.
- If time runs out, Saeko auto-selects the highest Appeal captive.
🔍 Feeding Tips:
- Prioritize low-Appeal captives above 20% Health in early days.
- Don’t hoard food — equal distribution prevents waste and sudden deaths.
- 0% Health = auto-fed or death.
❤️ Act III: Health vs. Appeal Explained
| Stat | Range | Effect |
|---|---|---|
| Health | 0–100% | Drops if not fed; 0% triggers forced feeding/death |
| Appeal | 0–100% | Higher = Saeko’s target on delays; boosted by food & replies |
✅ Key Strategy:
Don’t overfeed one captive — it may backfire later in flag-based routes.
🌒 Act IV: Night Cycle – Real-Time Prompts
Nighttime is dangerous. Saeko talks; you must respond quickly and accurately.
- Prompts offer 1–3 response choices.
- If you don’t choose in time, harsh/default reply auto-triggers.
- Responses influence hidden “Atonement” or “Genocide” flags.
💡 Survival Advice:
- Save before each night starts.
- Missed replies can ruin Atonement routes.
- Reply with empathy between Nights 3–6 for the Mercy route.
📱 Act V: Midnight Phone & Side Content
At midnight, Rin checks Saeko’s old phone — your only quiet moment.
Features:
- Save your progress.
- Browse news headlines foreshadowing lore.
- Read an unlockable web novel (advance each night).
- Play a one-button mini-game (for fun only).
📘 Bonus Tip:
You can only read the final web novel chapter if one captive maintains ≥50% Appeal by Day 4.
🔚 Act VI: All Endings & How to Unlock Them
1️⃣ Genocide Ending (Destruction)
- Feed all but one captive.
- Choose bold, defiant replies.
- Outcome: Rin & Saeko grow giant and destroy the city.
2️⃣ Atonement Ending (Mercy-Kill)
- Sacrifice every other day.
- Choose apologetic/empathetic replies on Nights 3–6.
- Rin shrinks Saeko and ends her suffering. Media reveals the truth.
3️⃣ Mercy Spare Ending
- Same flags as Atonement, but choose to spare Saeko at the final choice.
- Outcome: Saeko survives — now thumb-sized — under Rin’s care.
🗺️ Route Planning:
- 1 sacrifice every 2 days + “I’m sorry” answers = Atonement.
- Choose “Spare” at the end = Mercy Spare route.
⚙️ Act VII: Speedrun & Advanced Tips
- Macro Quick Save loops (Day > Feed > Save) for fast testing.
- Hold Skip during “Bare Nights” to jump forward.
- Maintain one captive at Appeal ≥50% for exclusive Day 4 & 7 lore scenes.
- Speedrun goal: all endings in under 90 minutes with max text speed & auto-advance.
⚠️ Act VIII: Save-Game Pitfalls
- Delay in feeding = auto-kill highest Appeal captive.
- Autosave only happens at Midnight. Use Manual Saves liberally.
- Alt-tabbing during saves may corrupt your file.
📂 Backup Tip:
Always copyDocuments\Saeko\Savesbefore testing flags or endings.
🧾 Act IX: Final Thoughts & Resources
This comprehensive guide covers every mechanic in Saeko: Giantess Dating Sim, from click-based UI, feeding sacrifices, night flag replies, phone content, all three endings, and best save practices.
