To establish a successful foundation on your first day in Portal Defense, immediately spend your starting currency on portal summons to unlock a basic roster, while reserving enough gold to place and upgrade those units during combat waves. Securing a complete defensive team early prevents enemy swarms from overwhelming your base before you can build up your economy.
Building Your Starter Roster
Your main day-one objective is filling out your active deployment slots using the portal summoning system. Prioritize building a complete, functional roster over holding out for rare high-tier units.
- Summon Immediately: Spend initial resources right away so you have enough units to place during early defense phases.
- Target Unit Variety: Aim for a balance between single-target damage dealers and area-of-effect (AOE) crowd control units to handle different enemy wave compositions.
- Field Lower Rarities First: A complete deployment of common or lower-rarity units provides more total coverage than a single empty slot while waiting for better portal drops.
Managing Summons and In-Match Gold
Sustaining your progress requires splitting your spending between off-field portal pulls and on-field combat upgrades. Depleting all your currency on summons leaves you without the gold needed to respond to stronger enemy waves inside matches.
- Keep an In-Match Reserve: Retain a portion of gold specifically for unit placement costs and level upgrades during active defense waves.
- Alternate Spending: Rotate between pulling new characters from portals and leveling up existing units on the field to keep pace with rising enemy health pools.
- Upgrade Before Expansion: Focus in-match gold on leveling up key placed units rather than filling every map space with weak, un-upgraded characters.
Positioning Units for Maximum Coverage
Unit placement determines how effectively your starter team clears oncoming waves. Proper positioning ensures your units deal maximum damage before enemies reach critical defense points.
| Unit Role | Primary Map Position | Target Enemy Type |
|---|---|---|
| AOE & Crowd Control | Map choke points and tight bends | Dense enemy swarms |
| High Attack Speed | Front-line entry paths | Fast early-wave units |
| High Single-Target Damage | Mid-to-rear defensive layers | High-health single targets |
Place area-of-effect units directly at map choke points where enemies group together. Position high-speed units near the front to deal initial chip damage, and locate slow, high-damage units further back along the path to finish off surviving targets. If a specific lane begins to fall, reallocate your remaining gold to upgrade established choke-point defenses or pull alternative unit types from the portal.
Free Portal Defense Codes
Current active codes and how to redeem them.
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Player Comments
157 players commented on this guide.
Can you add more details about strategy in a future update?
This saved me time in the early game.
The tips are practical and easy to follow.
This guide answered the exact question I had.