Place towers on anomalies to get bonus effects. Anomalies are the floating symbols that may appear on some tower tiles. Blue anomalies will increase the range of a tower. Placing status-inducing towers, such as the slow tower, on them to increase the time that it is effective. Red anomalies increase the damage of a tower. Yellow anomalies increase the firing rate of a tower by 30%. Place attack towers, such as wooden towers, near status-inducing towers. Use poison and slow towers to slow and weaken enemies, while wooden towers damage them in those states.