Royal Defense - Invisible Threat
About the game
The battles haven't stopped raging in the kingdom! Invisible Threat contains three new episodes for true tower defense fans. We've spent more time on balancing the levels for Steam players. We've also added new enemies to diversify the game. You'll need to use new tactics to beat them!
User reviews
Positive reviews
66.7%
- Positive
- 6
- Negative
- 3
Updated Oct 28, 5:59 AM
Review history
2 observations in viewOct 4, 2026, 5:35 AM – Oct 28, 2026, 5:59 AM
Store prices
Current prices
| Currency | Price | Updated |
|---|---|---|
USD $1.99 | Sep 5 | |
AED 6.00 | Sep 5 | |
ARS 1.99 | Sep 5 | |
A$2.95 | Sep 5 | |
R$6.99 | Sep 5 | |
CA$2.59 | Sep 5 | |
CHF 2.25 | Sep 5 | |
CLP 1,300 | Sep 5 | |
CN¥11.00 | Sep 5 | |
COP 5,500.00 | Sep 5 | |
CRC 950.00 | Sep 5 | |
€1.99 | Sep 5 | |
£1.69 | Sep 5 | |
HK$13.00 | Sep 5 | |
IDR 19,499.00 | Sep 5 | |
₪7.25 | Sep 5 | |
₹105.00 | Sep 5 | |
JP¥235 | Sep 5 | |
₩2,300 | Sep 5 | |
KWD 0.45 | Sep 5 | |
KZT 600.00 | Sep 5 | |
MX$26.99 | Sep 5 | |
MYR 5.69 | Sep 5 | |
NOK 22.25 | Sep 5 | |
NZ$2.99 | Sep 5 | |
PEN 5.00 | Sep 5 | |
₱71.49 | Sep 5 | |
PLN 8.99 | Sep 5 | |
QAR 5.49 | Sep 5 | |
RUB 82.00 | Sep 5 | |
SAR 5.25 | Sep 5 | |
SGD 2.15 | Sep 5 | |
THB 47.00 | Sep 5 | |
TRY 1.99 | Sep 5 | |
NT$45.00 | Sep 5 | |
UAH 50.00 | Sep 5 | |
UYU 64.00 | Sep 5 | |
₫30,000 | Sep 5 | |
ZAR 21.50 | Sep 5 |
Price history
143 observations in viewHistorical price data prior to Oct 2026 is from isthereanydeal.com.Dec 5, 2014, 5:20 AM – Sep 5, 2026, 7:46 AM