Merge pairs before you spawn more
Virus Attack Merge Plane works in two moves that repeat: merge matching planes into stronger ones, then place them where the incoming virus targets hit hardest. The board only advances when the merge chain keeps moving, so the practical note is simple — never let the board stall.
Merge matching pairs then place them where the lane is busiest
Merge matching planes into stronger units and place them so your formation clears the incoming targets each stage sends. A level ends when the condition shown on screen is met, whether that is surviving a wave or reaching a target strength. Merge up, then place.
Click or tap to create a new plane — the screen answers with a New plane! prompt — then drag two matching planes together to merge them into the next level. Upgrade buttons and stage actions run from the on-screen bar, and the panel keeps a Power reading for your setup.
Create a few planes and merge the first matching pair the moment it appears, rather than filling the board with singles. Then watch which lane draws the most incoming targets and place the merged plane there before the next wave reaches the front line.
Merge the first matching pair before you spawn more
Two planes of the same level are worth more as one plane of the next level, because the stronger unit takes a single slot and covers more of the lane. Do not wait for a perfect board; merge the first matched pair and keep the cycle going, since a stalled merge is what lets a wave slip through.
Move your strongest plane to the busiest lane
Not every lane needs the same strength, so put the highest merged plane where the incoming targets arrive fastest. A strong unit idling on a quiet lane helps nobody, while the busiest lane decides whether the stage holds. Re-check the pressure after each wave and shift strength when the target moves.
Read the Power reading before you spend on upgrades
Upgrades cost resources, and the Power reading on the panel tells you where the current setup stands before you commit. Save the button presses for the moment between waves, when lane pressure is known and the next target is visible, instead of spending early and running short on a lane that suddenly needs cover.
Keep one slot open so the board keeps feeding merges
A board with every slot filled can stop a new plane from appearing and block your next merge. Leave one spot open so the game keeps feeding the merge chain, and treat that slot as part of the strategy rather than wasted space. The strongest formations are usually the ones that never stall.
Use the reward panel between waves
The reward panel shows what is available to claim — a Free offer with a Claim button and an Equip reward option for your planes. Collect it between waves so the next wave starts with the bonus already applied, and spend the equipped reward on the unit your busiest lane is holding.
Treat the loading bar as your start signal
The scene opens behind a Loading counter that climbs to 100% before input counts, so wait for the full bar instead of tapping early. A tap during the loading pass lands nowhere useful, and the board is not interactive until the bar finishes — the completed counter is the sign that the board is yours to run.
Questions about merging and the reward panel
How do two planes combine into a stronger one?
Click or tap to create a plane, then drag one plane onto another of the same level. The pair merges into a single plane of the next level that takes one slot, so combining early keeps the board roomy and the lane coverage climbing.
Why does my board stop producing new planes?
Almost always because every slot is full. The game needs an open spot to deliver a New plane! prompt, so a completely filled board blocks the merge chain. Free one slot and the next plane can appear again.
When should I claim the reward on the panel?
Claim it whenever the panel shows it, ideally between waves when nothing is pressing your lane. The Free offer and its Claim button hand you an Equip reward you can apply to your strongest plane before the next target arrives.
What does the Power reading actually tell me?
It is the number the panel keeps beside your setup — your current strength at a glance. Check it before spending on upgrades, because it shows whether the busiest lane already has enough cover or still needs the next merge.
