Company: DKI
Filing Date: 2025-08-11
Form Type: 424B4
Source: 0001641172-25-022921
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Company: DarkIris Inc.
Filing Date: 2025-08-11
Form: 424B4
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, we increased user conversion efficiency and average payment amounts. Overall, we will continue to optimize content experiences and consumption designs, guided by the user lifecycle, to further drive growth in ARPPU per quarter and optimize our revenue structure.

Monthly Download Users (MDU)

We define Monthly Download Users (MDU) as the number of users who completed the download and installation of a game within a given calendar month. It is important to note that we track each user based on the unique identification associated with each download device, and multiple downloads by the same user are typically counted once. The Average MDU for a specific period is calculated by averaging the MDU for each month within that period. MDU is a key metric for assessing the reach and market appeal of a game. It is particularly indicative during the initial launch phase or during periods of major promotional campaigns, offering a clear reflection of user acquisition effectiveness and the potential market scale.

|                     |     | For the Years Ended September 30, |         |     |      |        |
| Quarterly           
 Average MDU (1)     |     |                              2024 |         |     | 2023 |        |
| Q1 (Oct 1 – Dec 31) |     |                                   |  43,273 |     |      | 47,185 |
| Q2 (Jan 1 – Mar 31) |     |                                   | 110,111 |     |      | 64,841 |
| Q3 (Apr 1 – Jun 30) |     |                                   | 132,769 |     |      | 70,613 |
| Q4 (Jul 1 – Sep 30) |     |                                   | 121,158 |     |      | 51,636 |

For the fiscal year ended September 30, 2024, our quarterly Average MDU demonstrated strong growth momentum, particularly in Q2 and Q3. Average MDU of the fiscal year ended September 30,2024 surged from 43,273 in Q1 to 110,111 in Q2, representing a remarkable 154.5% quarter-over-quarter increase. This was one of the most significant quarterly growth figures of the fiscal year ended September 30, 2024 and underscores our exceptional execution in product promotion and market penetration.

This substantial increase can be primarily attributed to several key factors. The surge was largely driven by a concentrated rollout of new product lines, which fueled a sharp rise in organic traffic. Between Q1 and Q2 for